Ephemeris
An ephemeris is a tabulation of computed positions and velocities (and/or various derived quantities such as right ascension and declination) of an orbiting body at specific times.
Generated ephemeris for 22105 Pirko (2000 LS36)
Classification: Main-belt Asteroid SPK-ID: 2022105
Current Settings
Ephemeris Type : OBSERVER
Target Body : Asteroid 22105 Pirko (2000 LS36)
Observer Location : Geocentric [500]
Time Span : Start=2009-10-01, Stop=2009-10-31, Step=1 d
Table Settings : defaults
Display/Output : default (formatted HTML)
Object Data Page
JPL/HORIZONS 22105 Pirko (2000 LS36) 2009-Oct-01 03:19:45
Rec #: 22105 Soln.date: - # obs: 394 (1975-2006)
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):
EPOCH= 2455000.5 ! 2009-Jun-18.00 (CT) RMSW= n.a.
EC= .208124 QR= 1.8729256 TP= 2454500.0885223
OM= 68.38149 W= 282.69206 IN= 8.0891
A= 2.3651753 MA= 135.59271 ADIST= 2.857425
PER= 3.6375 N= .270962426 ANGMOM= .025876019
DAN= 2.16378 DDN= 2.37115 L= 351.1969075
B= -7.8901677 TP= 2008-Feb-03.5885223
Physical parameters (KM, SEC, rotational period in hours):
GM= n.a. RAD= n.a. ROTPER= n.a.
H= 14.4 G= .150 B-V= n.a.
ALBEDO= n.a. STYP= n.a.
ASTEROID comments:
1: soln ref.= MPO97246, OCC=1 M-v 38h
2: source=MPC:mpn
Results
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Ephemeris / WWW_USER Thu Oct 1 03:19:45 2009 Pasadena, USA / Horizons
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Target body name: 22105 Pirko (2000 LS36) {source: MPO97246}
Center body name: Earth (399) {source: DE405}
Center-site name: GEOCENTRIC
*******************************************************************************
Start time : A.D. 2009-Oct-01 00:00:00.0000 UT
Stop time : A.D. 2009-Oct-31 00:00:00.0000 UT
Step-size : 1440 minutes
*******************************************************************************
Target pole/equ : No model available
Target radii : (unavailable)
Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 0.00000000,0.00000000,0.0000000 {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.090930.p091222
EOP coverage : DATA-BASED 1962-JAN-20 TO 2009-SEP-30. PREDICTS-> 2009-DEC-21
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= 2455000.5 ! 2009-Jun-18.00 (CT) RMSW= n.a.
EC= .208124 QR= 1.8729256 TP= 2454500.0885223
OM= 68.38149 W= 282.69206 IN= 8.0891
Asteroid physical parameters (KM, SEC, rotational period in hours):
GM= n.a. RAD= n.a. ROTPER= n.a.
H= 14.4 G= .150 B-V= n.a.
ALBEDO= n.a. STYP= n.a.
*******************************************************************************************************
Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC APmag delta deldot S-O-T /r S-T-O
*******************************************************************************************************
$$SOE
2009-Oct-01 00:00 11 23 34.43 +10 34 40.8 20.08 3.75457432156246 -8.0487067 21.2156 /L 7.3161
2009-Oct-02 00:00 11 25 00.59 +10 26 05.5 20.08 3.74985397917579 -8.2974807 21.7919 /L 7.5031
2009-Oct-03 00:00 11 26 26.58 +10 17 30.9 20.09 3.74499012511171 -8.5456940 22.3704 /L 7.6900
2009-Oct-04 00:00 11 27 52.40 +10 08 57.3 20.09 3.73998306095665 -8.7934262 22.9511 /L 7.8768
2009-Oct-05 00:00 11 29 18.06 +10 00 24.6 20.10 3.73483303839518 -9.0407699 23.5339 /L 8.0634
2009-Oct-06 00:00 11 30 43.55 +09 51 52.9 20.10 3.72954025331598 -9.2878243 24.1189 /L 8.2498
2009-Oct-07 00:00 11 32 08.87 +09 43 22.2 20.11 3.72410484441061 -9.5346865 24.7060 /L 8.4360
2009-Oct-08 00:00 11 33 34.02 +09 34 52.6 20.11 3.71852689768606 -9.7814400 25.2951 /L 8.6219
2009-Oct-09 00:00 11 34 59.00 +09 26 24.1 20.12 3.71280645734793 -10.0281444 25.8862 /L 8.8075
2009-Oct-10 00:00 11 36 23.81 +09 17 56.8 20.12 3.70694354246305 -10.2748259 26.4794 /L 8.9927
2009-Oct-11 00:00 11 37 48.44 +09 09 30.7 20.13 3.70093816811767 -10.5214711 27.0745 /L 9.1776
2009-Oct-12 00:00 11 39 12.89 +09 01 05.9 20.13 3.69479036952120 -10.7680234 27.6716 /L 9.3621
2009-Oct-13 00:00 11 40 37.16 +08 52 42.4 20.14 3.68850022748944 -11.0143816 28.2706 /L 9.5461
2009-Oct-14 00:00 11 42 01.25 +08 44 20.4 20.14 3.68206789360801 -11.2604024 28.8716 /L 9.7297
2009-Oct-15 00:00 11 43 25.15 +08 35 59.9 20.14 3.67549361289916 -11.5059071 29.4744 /L 9.9127
2009-Oct-16 00:00 11 44 48.85 +08 27 40.9 20.15 3.66877774117900 -11.7506932 30.0792 /L 10.0952
2009-Oct-17 00:00 11 46 12.36 +08 19 23.5 20.15 3.66192075411549 -11.9945511 30.6858 /L 10.2771
2009-Oct-18 00:00 11 47 35.67 +08 11 07.7 20.15 3.65492324588971 -12.2372832 31.2942 /L 10.4584
2009-Oct-19 00:00 11 48 58.77 +08 02 53.7 20.16 3.64778591745103 -12.4787197 31.9045 /L 10.6390
2009-Oct-20 00:00 11 50 21.66 +07 54 41.5 20.16 3.64050955687477 -12.7187296 32.5166 /L 10.8190
2009-Oct-21 00:00 11 51 44.34 +07 46 31.1 20.16 3.63309501608367 -12.9572226 33.1304 /L 10.9982
2009-Oct-22 00:00 11 53 06.81 +07 38 22.7 20.17 3.62554318838786 -13.1941444 33.7461 /L 11.1766
2009-Oct-23 00:00 11 54 29.05 +07 30 16.2 20.17 3.61785499005026 -13.4294683 34.3635 /L 11.3543
2009-Oct-24 00:00 11 55 51.07 +07 22 11.7 20.17 3.61003134721090 -13.6631853 34.9827 /L 11.5312
2009-Oct-25 00:00 11 57 12.86 +07 14 09.2 20.17 3.60207318784345 -13.8952970 35.6036 /L 11.7072
2009-Oct-26 00:00 11 58 34.42 +07 06 08.9 20.18 3.59398143739486 -14.1258100 36.2263 /L 11.8824
2009-Oct-27 00:00 11 59 55.75 +06 58 10.8 20.18 3.58575701636809 -14.3547346 36.8508 /L 12.0566
2009-Oct-28 00:00 12 01 16.84 +06 50 14.8 20.18 3.57740083814069 -14.5820857 37.4770 /L 12.2300
2009-Oct-29 00:00 12 02 37.69 +06 42 21.1 20.18 3.56891380556741 -14.8078855 38.1050 /L 12.4024
2009-Oct-30 00:00 12 03 58.29 +06 34 29.8 20.18 3.56029680531009 -15.0321685 38.7347 /L 12.5739
2009-Oct-31 00:00 12 05 18.65 +06 26 40.7 20.18 3.55155069940185 -15.2549864 39.3663 /L 12.7443
$$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.
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)
APmag =
Asteroid's approximate apparent visual magnitude by following definition:
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 extrapolation error could be large and
unknown. Units: NONE
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
Source JPL NASA
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
Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).
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