54509 YORP (2000 PH5)

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2299638514 ± 2.00e+00
Semi-major axis (a)1.0058563387 AU ± 3.00e+00
Inclination (i)1.59947613° ± 4.00e+00
Long. of Asc. Node (Ω)278.18541804° ± 5.00e+00
Arg. of Perihelion (ω)278.99868894° ± 6.00e+00
Mean Anomaly (M)130.15651893° ± 1.73e-04
Mean Motion (n)0.9770309931°/day ± 4.37e+00
Perihelion dist (q)0.77454574 AU ± 3.06e+00
Aphelion dist (Q)1.23716694 AU ± 4.20e+00
Orbital Period1.00879736 yr ± 4.51e+00
NGA Modelr2
A28.79457947e-07 AU/d²
Physical Parameters
H (abs. magnitude)22.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.478″
Uncertainty0
Orbit TypeApollo
MOID0.000494 AU
Observations Used515
Oppositions1
Arc Total2000-2005
First Observation Used2000-08-03
Last Observation Used2005-08-03
Observations (548)
Date Type RA Dec Mag Band Observatory
2003-08-24 21:02:14 C 19 52 48.63 -09 38 20.4 o 950
2004-07-26 02:30:59 C 16 07 40.83 +45 02 08.0 c 932
2004-07-26 02:33:59 C 16 07 50.60 +45 00 48.8 c 932
2004-07-26 02:35:59 C 16 07 57.07 +44 59 56.8 c 932
2004-07-26 02:41:00 C 16 08 13.31 +44 57 44.4 c 932
2004-07-26 04:16:58 C 16 13 52.95 +44 18 27.1 c 670
2004-07-26 04:24:49 C 16 14 17.14 +44 15 01.4 c 670
2004-07-26 04:55:15 C 16 15 50.49 +44 01 37.0 c 670
2004-07-26 05:17:40 C 16 16 58.71 +43 51 39.0 c 670
2004-07-26 05:39:40 C 16 18 05.31 +43 41 48.0 c 670
2004-07-26 06:01:18 C 16 19 10.49 +43 32 03.1 c 670
2004-07-26 06:22:57 C 16 20 15.39 +43 22 13.6 c 670
2004-07-26 06:34:37 C 16 20 50.30 +43 16 54.2 c 670
2004-07-26 20:20:16 C 16 58 47.83 +37 08 39.4 r 170
2004-07-26 20:21:23 C 16 58 50.27 +37 08 09.4 r 170
2004-07-26 20:22:32 C 16 58 52.73 +37 07 39.4 r 170
2004-07-26 20:23:40 C 16 58 55.18 +37 07 09.0 r 170
2004-07-26 20:23:58 C 16 58 55.79 +37 07 01.4 r 170
2004-07-26 20:41:34 C 16 59 33.76 +36 59 14.2 r 170
2004-07-26 20:42:44 C 16 59 36.24 +36 58 43.5 r 170
2004-07-26 20:44:12 C 16 59 39.39 +36 58 04.9 r 170
2004-07-27 09:12:25 C 17 24 37.67 +31 42 02.9 k F65
2004-07-27 09:13:11 C 17 24 38.88 +31 41 44.0 k F65
2004-07-27 09:13:57 C 17 24 40.09 +31 41 24.8 k F65
2004-07-27 09:14:51 C 17 24 41.56 +31 41 01.6 k F65
2004-07-27 09:15:46 C 17 24 43.06 +31 40 39.2 k F65
2004-07-27 09:16:26 C 17 24 44.12 +31 40 22.4 k F65
2004-07-27 09:17:16 C 17 24 45.46 +31 40 01.4 k F65
2004-07-27 09:18:01 C 17 24 46.68 +31 39 42.5 k F65
2004-07-27 09:18:48 C 17 24 47.88 +31 39 23.9 k F65
2004-07-27 09:19:37 C 17 24 49.23 +31 39 02.8 k F65
2004-07-27 20:37:16 C 17 42 44.70 +27 13 32.0 094
2004-07-27 20:38:05 C 17 42 45.75 +27 13 13.9 094
2004-07-27 20:38:55 C 17 42 46.80 +27 12 55.8 094
2004-07-27 20:39:45 C 17 42 47.84 +27 12 37.8 094
2004-07-27 20:40:33 C 17 42 48.91 +27 12 19.4 094
2004-07-27 20:41:22 C 17 42 49.97 +27 12 01.2 094
2004-07-27 20:42:12 C 17 42 51.02 +27 11 43.4 094
2004-07-27 20:43:02 C 17 42 52.08 +27 11 25.0 094
2004-07-27 20:48:32 C 17 42 59.19 +27 09 23.1 094
2004-07-27 20:49:22 C 17 43 00.26 +27 09 04.6 094
2004-07-27 20:50:11 C 17 43 01.34 +27 08 46.0 094
2004-07-27 20:51:00 C 17 43 02.39 +27 08 27.9 094
2004-07-27 20:51:50 C 17 43 03.43 +27 08 09.9 094
2004-07-27 20:52:40 C 17 43 04.50 +27 07 51.6 094
2004-07-27 20:53:28 C 17 43 05.57 +27 07 33.1 094
2004-07-27 20:54:17 C 17 43 06.64 +27 07 14.5 094
2004-07-27 20:55:07 C 17 43 07.69 +27 06 56.7 094
2004-07-27 20:55:57 C 17 43 08.73 +27 06 38.4 094
2004-07-27 20:56:45 C 17 43 09.79 +27 06 20.3 094
Radar Observations (5)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-07-27 01:54:00 -152234.612 5 Hz 8560 -14 -14
2001-07-27 08:01:00 13507054.547 10 us 8560 -14 -14
2001-07-28 05:00:00 15490726.314 1 us 8560 -14 -14
2004-07-27 01:13:00 14410506.25 0.3 us 2380 -1 -1
2004-07-28 01:55:00 16817885.86 0.3 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)