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
2002-07-27 23:05:04 C 19 07 40.89 +39 39 33.6 540
2002-07-27 23:05:05 C 19 07 40.94 +39 39 17.5 d 557
2002-07-27 23:06:05 C 19 07 41.35 +39 39 01.5 540
2002-07-27 23:14:58 C 19 07 45.48 +39 33 58.0 d 557
2002-07-27 23:25:47 C 19 07 50.45 +39 28 09.2 d 557
2002-07-28 20:42:18 C 19 17 48.88 +29 43 21.6 c 540
2002-07-28 20:43:28 C 19 17 49.14 +29 42 54.6 c 540
2002-07-28 20:44:38 C 19 17 49.42 +29 42 27.0 c 540
2002-07-28 20:55:18 C 19 17 51.88 +29 38 18.3 c 540
2002-07-28 20:56:28 C 19 17 52.14 +29 37 51.7 c 540
2002-07-28 20:57:38 C 19 17 52.43 +29 37 24.3 c 540
2002-07-28 21:01:16 C 19 17 52.85 +29 35 47.5 d 557
2002-07-28 21:02:45 C 19 17 53.18 +29 35 13.0 d 557
2002-07-28 21:05:18 C 19 17 53.77 +29 34 13.0 d 557
2002-07-28 21:07:10 C 19 17 54.19 +29 33 30.2 d 557
2002-07-28 21:09:00 C 19 17 54.62 +29 32 47.3 d 557
2002-07-28 21:10:17 C 19 17 55.29 +29 32 29.5 c 540
2002-07-28 21:10:52 C 19 17 55.06 +29 32 03.9 d 557
2002-07-28 21:11:26 C 19 17 55.55 +29 32 02.5 c 540
2002-07-28 21:12:21 C 19 17 55.39 +29 31 29.8 d 557
2002-07-28 21:12:36 C 19 17 55.81 +29 31 35.6 c 540
2002-07-28 21:13:26 C 19 17 55.64 +29 31 04.0 d 557
2002-07-29 19:57:57 C 19 24 14.84 +21 56 39.1 c 151
2002-07-29 19:58:41 C 19 24 14.94 +21 56 27.3 c 151
2002-07-29 19:59:50 C 19 24 15.10 +21 56 08.1 c 151
2002-07-29 20:00:24 C 19 24 15.17 +21 55 58.2 c 151
2002-07-29 20:04:55 C 19 24 15.81 +21 54 44.6 c 151
2002-07-29 20:05:24 C 19 24 15.89 +21 54 33.7 c 151
2002-07-29 20:06:32 C 19 24 16.04 +21 54 16.1 c 151
2002-07-29 20:07:09 C 19 24 16.09 +21 54 05.6 c 151
2002-07-29 20:09:43 C 19 24 16.44 +21 53 23.2 c 151
2002-07-29 20:10:19 C 19 24 16.55 +21 53 13.1 c 151
2002-07-29 20:10:54 C 19 24 16.63 +21 53 03.4 c 151
2002-07-29 20:11:23 C 19 24 16.69 +21 52 53.6 c 151
2002-07-31 07:12:57 C 19 29 44.15 +13 58 13.8 c 649
2002-07-31 07:16:30 C 19 29 44.37 +13 57 35.2 c 649
2002-07-31 21:38:04 C 19 31 35.38 +11 33 43.7 c 540
2002-07-31 21:39:11 C 19 31 35.41 +11 33 33.1 c 540
2002-07-31 21:40:20 C 19 31 35.45 +11 33 22.8 c 540
2002-07-31 21:42:33 C 19 31 35.55 +11 33 02.2 c 540
2002-07-31 21:43:42 C 19 31 35.61 +11 32 51.5 c 540
2002-08-01 01:18:58 C 19 31 59.72 +11 06 31.9 m 859
2002-08-01 01:19:56 C 19 31 59.70 +11 06 24.8 m 859
2002-08-01 01:20:55 C 19 31 59.70 +11 06 16.1 m 859
2002-08-03 01:15:50 C 19 35 49.35 +05 31 00.3 m 859
2002-08-03 01:17:44 C 19 35 49.41 +05 30 47.9 m 859
2002-08-03 01:19:23 C 19 35 49.40 +05 30 41.9 m 859
2002-08-04 19:55:28 C 19 38 11.66 +02 09 01.2 c 185
2002-08-04 19:58:11 C 19 38 11.68 +02 08 50.3 c 185
2002-08-04 19:59:52 C 19 38 11.71 +02 08 44.4 c 185
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)