Ver asteroide 2005 YU55 -datos
Publicado: Lun Nov 07, 2011 11:06 am
Para el que le interese paso datos que sacado de la pagina http://ssd.jpl.nasa.gov/horizons.cgi#results
HORIZONS Web-Interface
This tool provides a web-based limited interface to JPL` s HORIZONS system which can be used to generate ephemerides for solar-system bodies. Full access to HORIZONS features is available via the primary telnet interface. HORIZONS system news shows recent changes and improvements. A web-interface tutorial is available to assist new users.
Current Settings
Ephemeris Type [change] : OBSERVER
Target Body [change] : Asteroid (2005 YU55)
Observer Location [change] : Observatorio UCM, Madrid [I86] ( 356°16` 26.0` ` E, 40°27` 04.0` ` N, 633.9 m )
Time Span [change] : Start=2011-11-07, Stop=2011-11-17, Step=1 d
Table Settings [change] : QUANTITIES=1,2,9,20,23,24
Display/Output [change] : default (formatted HTML)
Object Data Page
JPL/HORIZONS (2005 YU55) 2011-Nov-07 02:29:02
Rec #:482413 (+COV) Soln.date: 2011-Nov-06_15:50:30 # obs: 777 (2005-2011)
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):
EPOCH= 2455879.5 ! 2011-Nov-14.00 (CT) Residual RMS= .36774
EC= .430568996996457 QR= .6590704584850872 TP= 2455814.857879497
OM= 35.92457509806348 W= 273.5860384072852 IN= .3409497640456884
A= 1.15741934494035 MA= 51.16624701497686 ADIST= 1.655768231395613
PER= 1.24521 N= .791531073 ANGMOM= .01670328
DAN= .91812 DDN= .96894 L= 309.5106768
B= -.3402822 TP= 2011-Sep-10.3578795
Physical parameters (KM, SEC, rotational period in hours):
GM= n.a. RAD= .200 ROTPER= 18.
H= 21.929 G= .150 B-V= n.a.
ALBEDO= n.a. STYP= C type
ASTEROID comments:
1: soln ref.= JPL#76, PHA OCC=1 radar( 6 delay, 6 Dop.)
2: source=ORB
Results
*******************************************************************************
Ephemeris / WWW_USER Mon Nov 7 02:29:02 2011 Pasadena, USA / Horizons
*******************************************************************************
Target body name: (2005 YU55) {source: JPL#76}
Center body name: Earth (399) {source: DE405}
Center-site name: Observatorio UCM, Madrid
*******************************************************************************
Start time : A.D. 2011-Nov-07 00:00:00.0000 UT
Stop time : A.D. 2011-Nov-17 00:00:00.0000 UT
Step-size : 1440 minutes
*******************************************************************************
Target pole/equ : No model available
Target radii : 0.2 km
Center geodetic : 356.273900,40.4512262,0.6360157 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 356.273900,4860.83873,4116.6492 {E-lon(deg),Dxy(km),Dz(km)}
Center pole/equ : High-precision EOP model {East-longitude +}
Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole}
Target primary : Sun {source: DE405}
Interfering body: MOON (Req= 1737.400) km {source: DE405}
Deflecting body : Sun, EARTH {source: DE405}
Deflecting GMs : 1.3271E+11, 3.9860E+05 km^3/s^2
Small perturbers: Ceres, Pallas, Vesta {source: SB405-CPV-2}
Small body GMs : 6.32E+01, 1.43E+01, 1.78E+01 km^3/s^2
Atmos refraction: NO (AIRLESS)
RA format : HMS
Time format : CAL
EOP file : eop.111104.p120126
EOP coverage : DATA-BASED 1962-JAN-20 TO 2011-NOV-04. PREDICTS-> 2012-JAN-25
Units conversion: 1 AU= 149597870.691 km, c= 299792.458 km/s, 1 day= 86400.0 s
Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO )
Table cut-offs 2: Solar Elongation ( 0.0,180.0=NO )
*******************************************************************************
Initial FK5/J2000.0 heliocentric ecliptic osculating elements (AU, DAYS, DEG):
EPOCH= 2455879.5 ! 2011-Nov-14.00 (CT) Residual RMS= .36774
EC= .430568996996457 QR= .6590704584850872 TP= 2455814.857879497
OM= 35.92457509806348 W= 273.5860384072852 IN= .3409497640456884
Asteroid physical parameters (KM, SEC, rotational period in hours):
GM= n.a. RAD= .200 ROTPER= 18.
H= 21.929 G= .150 B-V= n.a.
ALBEDO= n.a. STYP= C type
**************************************************************************************************************************************
Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC R.A.__(a-apparent)__DEC APmag S-brt delta deldot S-O-T /r S-T-O
**************************************************************************************************************************************
$$SOE
2011-Nov-07 00:00 m 15 07 53.50 -14 52 21.7 15 08 32.66 -14 55 00.4 n.a. n.a. 0.01578829789734 -13.4983223 5.3116 /T 174.6027
2011-Nov-08 00:00 m 15 39 08.40 -13 04 51.7 15 39 47.51 -13 07 05.1 n.a. n.a. 0.00805079004487 -13.0747536 12.2295 /T 167.6713
2011-Nov-09 00:00 m 20 39 33.19 +10 51 07.8 20 40 07.97 +10 53 55.1 11.79 7.79 0.00217596564785 1.2084649 89.6049 /T 90.2695
2011-Nov-10 00:00 m 01 35 23.03 +18 24 45.4 01 36 03.92 +18 28 35.2 12.51 6.33 0.00831317576564 13.2926546 160.1864 /T 19.6521
2011-Nov-11 00:00 m 02 06 20.59 +17 31 51.7 02 07 02.05 +17 35 25.0 13.74 6.14 0.01605279641550 13.6053347 166.6223 /T 13.1663
2011-Nov-12 00:00 m 02 17 02.51 +17 09 15.3 02 17 44.12 +17 12 42.1 14.56 6.10 0.02388957001741 13.6786393 168.2041 /T 11.5199
2011-Nov-13 00:00 m 02 22 27.47 +16 57 02.2 02 23 09.17 +17 00 25.5 15.18 6.10 0.03176113999884 13.7241098 168.5055 /T 11.1393
2011-Nov-14 00:00 m 02 25 44.51 +16 49 26.6 02 26 26.25 +16 52 47.8 15.68 6.12 0.03965809606654 13.7676063 168.2877 /T 11.2638
2011-Nov-15 00:00 m 02 27 57.56 +16 44 18.5 02 28 39.34 +16 47 38.3 16.10 6.15 0.04758011276114 13.8150315 167.8101 /T 11.6341
2011-Nov-16 00:00 m 02 29 34.29 +16 40 38.8 02 30 16.09 +16 43 57.5 16.47 6.18 0.05552940062442 13.8681462 167.1854 /T 12.1382
2011-Nov-17 00:00 m 02 30 48.59 +16 37 56.9 02 31 30.42 +16 41 14.8 16.80 6.22 0.06350905114106 13.9275093 166.4700 /T 12.7196
$$EOE
**************************************************************************************************************************************
Column meaning:
TIME
Prior to 1962, times are UT1. Dates thereafter are UTC. Any ` b` symbol in
the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D.
date. Calendar dates prior to 1582-Oct-15 are in the Julian calendar system.
Later calendar dates are in the Gregorian system.
The uniform Coordinate Time scale is used internally. Conversion between
CT and the selected non-uniform UT output scale has not been determined for
UTC times after the next July or January 1st. The last known leap-second
is used over any future interval.
NOTE: "n.a." in output means quantity "not available" at the print-time.
SOLAR PRESENCE (OBSERVING SITE)
Time tag is followed by a blank, then a solar-presence symbol:
` *` Daylight (refracted solar upper-limb on or above apparent horizon)
` C` Civil twilight/dawn
` N` Nautical twilight/dawn
` A` Astronomical twilight/dawn
` ` Night OR geocentric ephemeris
LUNAR PRESENCE (OBSERVING SITE)
The solar-presence symbol is immediately followed by a lunar-presence symbol:
` m` Refracted upper-limb of Moon on or above apparent horizon
` ` Refracted upper-limb of Moon below apparent horizon OR geocentric
ephemeris
R.A._(ICRF/J2000.0)_DEC =
J2000.0 astrometric right ascension and declination of target center.
Corrected for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
R.A._(a-apparent)__DEC. =
Airless apparent right ascension and declination of the target center with
respect to the Earth true-equator and the meridian containing the Earth true
equinox of date. Corrected for light-time, gravitational deflection of light,
stellar aberration, precession & nutation.
Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
APmag S-brt =
Asteroid` s approximate apparent visual magnitude & surface brightness:
APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi1 + G*phi2)
In principle, accurate to ~ +/- 0.1 magnitude. For solar phase angles > 90 deg,
the error could exceed 1 magnitude. No values are output for phase angles
greater than 120 degrees, since the errors could be large and unknown.
Units: NONE & VISUAL MAGNITUDES PER SQUARE ARCSECOND
delta deldot =
Range ("delta") and range-rate ("delta-dot") of target center with respect
to the observer at the instant light seen by the observer at print-time would
have left the target center (print-time minus down-leg light-time); the
distance traveled by a light ray emanating from the center of the target and
recorded by the observer at print-time. "deldot" is a projection of the
velocity vector along this ray, the light-time-corrected line-of-sight from the
coordinate center, and indicates relative motion. A positive "deldot" means the
target center is moving away from the observer (coordinate center). A negative
"deldot" means the target center is moving toward the observer.
Units: AU and KM/S
S-O-T /r =
Sun-Observer-Target angle; target` s apparent solar elongation seen from
observer location at print-time. If negative, the target center is behind
the Sun. Angular units: DEGREES.
The ` /r` column is a Sun-relative code, output for observing sites
with defined rotation models only.
/T indicates target trails Sun (evening sky)
/L indicates target leads Sun (morning sky)
NOTE: The S-O-T solar elongation angle is the total separation in any
direction. It does not indicate the angle of Sun leading or trailing.
S-T-O =
Sun-Target-Observer (~ PHASE ANGLE) angle: the vertex angle at target center
formed by a vector to the apparent center of the Sun and a vector intersecting
the observer at print-time. This measurable angle is within 20 arcseconds
(0.006 deg) of the reduced PHASE ANGLE at observer` s location at print time.
The difference is due to down-leg stellar aberration affecting measured target
position but not apparent solar illumination direction. When computing phase,
Horizons uses the true phase angle, not S-T-O, but the resulting difference
in illuminated fraction is less than 0.001%.
Units: DEGREES
Computations by ...
Solar System Dynamics Group, Horizons On-Line Ephemeris System
4800 Oak Grove Drive, Jet Propulsion Laboratory
Pasadena, CA 91109 USA
Information: http://ssd.jpl.nasa.gov/
Connect : telnet://ssd.jpl.nasa.gov:6775 (via browser)
telnet ssd.jpl.nasa.gov 6775 (via command-line)
Author : Jon.Giorgini@jpl.nasa.gov
HORIZONS Web-Interface
This tool provides a web-based limited interface to JPL` s HORIZONS system which can be used to generate ephemerides for solar-system bodies. Full access to HORIZONS features is available via the primary telnet interface. HORIZONS system news shows recent changes and improvements. A web-interface tutorial is available to assist new users.
Current Settings
Ephemeris Type [change] : OBSERVER
Target Body [change] : Asteroid (2005 YU55)
Observer Location [change] : Observatorio UCM, Madrid [I86] ( 356°16` 26.0` ` E, 40°27` 04.0` ` N, 633.9 m )
Time Span [change] : Start=2011-11-07, Stop=2011-11-17, Step=1 d
Table Settings [change] : QUANTITIES=1,2,9,20,23,24
Display/Output [change] : default (formatted HTML)
Object Data Page
JPL/HORIZONS (2005 YU55) 2011-Nov-07 02:29:02
Rec #:482413 (+COV) Soln.date: 2011-Nov-06_15:50:30 # obs: 777 (2005-2011)
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):
EPOCH= 2455879.5 ! 2011-Nov-14.00 (CT) Residual RMS= .36774
EC= .430568996996457 QR= .6590704584850872 TP= 2455814.857879497
OM= 35.92457509806348 W= 273.5860384072852 IN= .3409497640456884
A= 1.15741934494035 MA= 51.16624701497686 ADIST= 1.655768231395613
PER= 1.24521 N= .791531073 ANGMOM= .01670328
DAN= .91812 DDN= .96894 L= 309.5106768
B= -.3402822 TP= 2011-Sep-10.3578795
Physical parameters (KM, SEC, rotational period in hours):
GM= n.a. RAD= .200 ROTPER= 18.
H= 21.929 G= .150 B-V= n.a.
ALBEDO= n.a. STYP= C type
ASTEROID comments:
1: soln ref.= JPL#76, PHA OCC=1 radar( 6 delay, 6 Dop.)
2: source=ORB
Results
*******************************************************************************
Ephemeris / WWW_USER Mon Nov 7 02:29:02 2011 Pasadena, USA / Horizons
*******************************************************************************
Target body name: (2005 YU55) {source: JPL#76}
Center body name: Earth (399) {source: DE405}
Center-site name: Observatorio UCM, Madrid
*******************************************************************************
Start time : A.D. 2011-Nov-07 00:00:00.0000 UT
Stop time : A.D. 2011-Nov-17 00:00:00.0000 UT
Step-size : 1440 minutes
*******************************************************************************
Target pole/equ : No model available
Target radii : 0.2 km
Center geodetic : 356.273900,40.4512262,0.6360157 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 356.273900,4860.83873,4116.6492 {E-lon(deg),Dxy(km),Dz(km)}
Center pole/equ : High-precision EOP model {East-longitude +}
Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole}
Target primary : Sun {source: DE405}
Interfering body: MOON (Req= 1737.400) km {source: DE405}
Deflecting body : Sun, EARTH {source: DE405}
Deflecting GMs : 1.3271E+11, 3.9860E+05 km^3/s^2
Small perturbers: Ceres, Pallas, Vesta {source: SB405-CPV-2}
Small body GMs : 6.32E+01, 1.43E+01, 1.78E+01 km^3/s^2
Atmos refraction: NO (AIRLESS)
RA format : HMS
Time format : CAL
EOP file : eop.111104.p120126
EOP coverage : DATA-BASED 1962-JAN-20 TO 2011-NOV-04. PREDICTS-> 2012-JAN-25
Units conversion: 1 AU= 149597870.691 km, c= 299792.458 km/s, 1 day= 86400.0 s
Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO )
Table cut-offs 2: Solar Elongation ( 0.0,180.0=NO )
*******************************************************************************
Initial FK5/J2000.0 heliocentric ecliptic osculating elements (AU, DAYS, DEG):
EPOCH= 2455879.5 ! 2011-Nov-14.00 (CT) Residual RMS= .36774
EC= .430568996996457 QR= .6590704584850872 TP= 2455814.857879497
OM= 35.92457509806348 W= 273.5860384072852 IN= .3409497640456884
Asteroid physical parameters (KM, SEC, rotational period in hours):
GM= n.a. RAD= .200 ROTPER= 18.
H= 21.929 G= .150 B-V= n.a.
ALBEDO= n.a. STYP= C type
**************************************************************************************************************************************
Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC R.A.__(a-apparent)__DEC APmag S-brt delta deldot S-O-T /r S-T-O
**************************************************************************************************************************************
$$SOE
2011-Nov-07 00:00 m 15 07 53.50 -14 52 21.7 15 08 32.66 -14 55 00.4 n.a. n.a. 0.01578829789734 -13.4983223 5.3116 /T 174.6027
2011-Nov-08 00:00 m 15 39 08.40 -13 04 51.7 15 39 47.51 -13 07 05.1 n.a. n.a. 0.00805079004487 -13.0747536 12.2295 /T 167.6713
2011-Nov-09 00:00 m 20 39 33.19 +10 51 07.8 20 40 07.97 +10 53 55.1 11.79 7.79 0.00217596564785 1.2084649 89.6049 /T 90.2695
2011-Nov-10 00:00 m 01 35 23.03 +18 24 45.4 01 36 03.92 +18 28 35.2 12.51 6.33 0.00831317576564 13.2926546 160.1864 /T 19.6521
2011-Nov-11 00:00 m 02 06 20.59 +17 31 51.7 02 07 02.05 +17 35 25.0 13.74 6.14 0.01605279641550 13.6053347 166.6223 /T 13.1663
2011-Nov-12 00:00 m 02 17 02.51 +17 09 15.3 02 17 44.12 +17 12 42.1 14.56 6.10 0.02388957001741 13.6786393 168.2041 /T 11.5199
2011-Nov-13 00:00 m 02 22 27.47 +16 57 02.2 02 23 09.17 +17 00 25.5 15.18 6.10 0.03176113999884 13.7241098 168.5055 /T 11.1393
2011-Nov-14 00:00 m 02 25 44.51 +16 49 26.6 02 26 26.25 +16 52 47.8 15.68 6.12 0.03965809606654 13.7676063 168.2877 /T 11.2638
2011-Nov-15 00:00 m 02 27 57.56 +16 44 18.5 02 28 39.34 +16 47 38.3 16.10 6.15 0.04758011276114 13.8150315 167.8101 /T 11.6341
2011-Nov-16 00:00 m 02 29 34.29 +16 40 38.8 02 30 16.09 +16 43 57.5 16.47 6.18 0.05552940062442 13.8681462 167.1854 /T 12.1382
2011-Nov-17 00:00 m 02 30 48.59 +16 37 56.9 02 31 30.42 +16 41 14.8 16.80 6.22 0.06350905114106 13.9275093 166.4700 /T 12.7196
$$EOE
**************************************************************************************************************************************
Column meaning:
TIME
Prior to 1962, times are UT1. Dates thereafter are UTC. Any ` b` symbol in
the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D.
date. Calendar dates prior to 1582-Oct-15 are in the Julian calendar system.
Later calendar dates are in the Gregorian system.
The uniform Coordinate Time scale is used internally. Conversion between
CT and the selected non-uniform UT output scale has not been determined for
UTC times after the next July or January 1st. The last known leap-second
is used over any future interval.
NOTE: "n.a." in output means quantity "not available" at the print-time.
SOLAR PRESENCE (OBSERVING SITE)
Time tag is followed by a blank, then a solar-presence symbol:
` *` Daylight (refracted solar upper-limb on or above apparent horizon)
` C` Civil twilight/dawn
` N` Nautical twilight/dawn
` A` Astronomical twilight/dawn
` ` Night OR geocentric ephemeris
LUNAR PRESENCE (OBSERVING SITE)
The solar-presence symbol is immediately followed by a lunar-presence symbol:
` m` Refracted upper-limb of Moon on or above apparent horizon
` ` Refracted upper-limb of Moon below apparent horizon OR geocentric
ephemeris
R.A._(ICRF/J2000.0)_DEC =
J2000.0 astrometric right ascension and declination of target center.
Corrected for light-time. Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
R.A._(a-apparent)__DEC. =
Airless apparent right ascension and declination of the target center with
respect to the Earth true-equator and the meridian containing the Earth true
equinox of date. Corrected for light-time, gravitational deflection of light,
stellar aberration, precession & nutation.
Units: HMS (HH MM SS.ff) and DMS (DD MM SS.f)
APmag S-brt =
Asteroid` s approximate apparent visual magnitude & surface brightness:
APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi1 + G*phi2)
In principle, accurate to ~ +/- 0.1 magnitude. For solar phase angles > 90 deg,
the error could exceed 1 magnitude. No values are output for phase angles
greater than 120 degrees, since the errors could be large and unknown.
Units: NONE & VISUAL MAGNITUDES PER SQUARE ARCSECOND
delta deldot =
Range ("delta") and range-rate ("delta-dot") of target center with respect
to the observer at the instant light seen by the observer at print-time would
have left the target center (print-time minus down-leg light-time); the
distance traveled by a light ray emanating from the center of the target and
recorded by the observer at print-time. "deldot" is a projection of the
velocity vector along this ray, the light-time-corrected line-of-sight from the
coordinate center, and indicates relative motion. A positive "deldot" means the
target center is moving away from the observer (coordinate center). A negative
"deldot" means the target center is moving toward the observer.
Units: AU and KM/S
S-O-T /r =
Sun-Observer-Target angle; target` s apparent solar elongation seen from
observer location at print-time. If negative, the target center is behind
the Sun. Angular units: DEGREES.
The ` /r` column is a Sun-relative code, output for observing sites
with defined rotation models only.
/T indicates target trails Sun (evening sky)
/L indicates target leads Sun (morning sky)
NOTE: The S-O-T solar elongation angle is the total separation in any
direction. It does not indicate the angle of Sun leading or trailing.
S-T-O =
Sun-Target-Observer (~ PHASE ANGLE) angle: the vertex angle at target center
formed by a vector to the apparent center of the Sun and a vector intersecting
the observer at print-time. This measurable angle is within 20 arcseconds
(0.006 deg) of the reduced PHASE ANGLE at observer` s location at print time.
The difference is due to down-leg stellar aberration affecting measured target
position but not apparent solar illumination direction. When computing phase,
Horizons uses the true phase angle, not S-T-O, but the resulting difference
in illuminated fraction is less than 0.001%.
Units: DEGREES
Computations by ...
Solar System Dynamics Group, Horizons On-Line Ephemeris System
4800 Oak Grove Drive, Jet Propulsion Laboratory
Pasadena, CA 91109 USA
Information: http://ssd.jpl.nasa.gov/
Connect : telnet://ssd.jpl.nasa.gov:6775 (via browser)
telnet ssd.jpl.nasa.gov 6775 (via command-line)
Author : Jon.Giorgini@jpl.nasa.gov