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
2001-07-30 02:26:20 C 18 47 09.66 +17 44 18.9 d 739
2001-07-30 02:29:20 C 18 47 10.84 +17 43 40.3 d 739
2001-07-30 02:32:13 C 18 47 12.02 +17 43 00.7 d 739
2001-07-30 12:47:34 C 18 51 50.38 +15 30 20.4 342
2001-07-30 12:54:06 C 18 51 52.53 +15 29 00.7 342
2001-07-30 13:00:39 C 18 51 54.72 +15 27 41.3 342
2001-07-30 15:12:15 C 18 52 38.78 +15 01 13.7 360
2001-07-30 15:14:44 C 18 52 39.63 +15 00 43.8 360
2001-07-30 15:16:44 C 18 52 40.29 +15 00 19.7 360
2001-07-31 20:34:17 C 19 03 00.61 +10 06 36.4 151
2001-07-31 20:35:29 C 19 03 00.65 +10 06 25.2 151
2001-07-31 20:37:08 C 19 03 01.08 +10 06 11.3 151
2001-07-31 20:37:45 C 19 03 01.20 +10 06 06.0 151
2001-07-31 20:38:18 C 19 03 01.34 +10 06 02.0 151
2001-07-31 20:39:07 C 19 03 01.50 +10 05 54.7 151
2001-07-31 20:58:37 C 19 03 05.89 +10 03 11.6 151
2001-07-31 21:00:58 C 19 03 06.40 +10 02 52.7 151
2001-08-04 02:30:46 C 19 18 22.85 +02 29 42.3 d 739
2001-08-04 02:33:31 C 19 18 23.33 +02 29 32.9 d 739
2001-08-04 02:36:09 C 19 18 23.58 +02 29 21.2 d 739
2001-08-07 20:49:37 C 19 27 36.25 -02 01 40.7 c 118
2001-08-07 21:09:31 C 19 27 37.24 -02 02 25.7 c 118
2001-08-07 21:14:55 C 19 27 37.48 -02 02 36.9 c 118
2001-08-13 20:25:05 C 19 36 19.77 -05 47 31.2 c 215
2001-08-13 20:26:38 C 19 36 19.78 -05 47 32.4 c 215
2001-08-13 20:28:20 C 19 36 19.83 -05 47 34.9 c 215
2001-08-13 20:29:56 C 19 36 19.91 -05 47 36.9 c 215
2002-07-26 12:48:53 C 18 27 21.32 +62 01 46.9 379
2002-07-26 12:49:43 C 18 27 22.93 +62 01 09.2 379
2002-07-27 12:56:51 C 19 00 53.84 +45 28 46.1 379
2002-07-27 12:57:35 C 19 00 54.24 +45 28 19.6 379
2002-07-27 12:59:11 C 19 00 55.25 +45 27 17.6 379
2002-07-27 21:06:01 C 19 06 45.35 +40 43 43.3 d 557
2002-07-27 21:15:05 C 19 06 49.72 +40 38 47.7 d 557
2002-07-27 21:24:02 C 19 06 53.96 +40 33 57.0 d 557
2002-07-27 21:34:37 C 19 06 58.99 +40 28 11.6 d 557
2002-07-27 21:45:07 C 19 07 03.94 +40 22 30.0 d 557
2002-07-27 21:55:03 C 19 07 08.57 +40 17 07.6 d 557
2002-07-27 22:05:00 C 19 07 13.20 +40 11 44.4 d 557
2002-07-27 22:15:11 C 19 07 17.93 +40 06 13.7 d 557
2002-07-27 22:25:02 C 19 07 22.50 +40 00 53.7 d 557
2002-07-27 22:50:19 C 19 07 34.19 +39 47 30.6 540
2002-07-27 22:51:24 C 19 07 34.68 +39 46 55.7 540
2002-07-27 22:52:25 C 19 07 35.14 +39 46 23.4 540
2002-07-27 22:54:54 C 19 07 36.29 +39 45 02.3 540
2002-07-27 22:55:13 C 19 07 36.41 +39 44 36.6 d 557
2002-07-27 22:55:55 C 19 07 36.73 +39 44 30.2 540
2002-07-27 22:56:54 C 19 07 37.18 +39 43 57.6 540
2002-07-27 22:59:14 C 19 07 38.25 +39 42 42.3 540
2002-07-27 23:04:05 C 19 07 40.44 +39 40 06.4 540
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)