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
2001-07-27 21:10:28 C 18 01 21.23 +35 33 16.4 c 540
2001-07-27 21:11:32 C 18 01 22.63 +35 32 46.5 c 540
2001-07-27 21:15:08 C 18 01 27.26 +35 31 07.5 c 540
2001-07-27 21:18:43 C 18 01 31.88 +35 29 28.3 c 540
2001-07-27 22:03:38 C 18 02 32.94 +35 08 38.7 m 611
2001-07-27 22:04:40 C 18 02 34.25 +35 08 10.2 m 611
2001-07-27 22:05:15 C 18 02 37.10 +35 09 40.2 d 620
2001-07-27 22:05:39 C 18 02 35.50 +35 07 43.0 m 611
2001-07-27 22:06:15 C 18 02 38.31 +35 09 13.0 d 620
2001-07-27 22:06:39 C 18 02 36.77 +35 07 15.7 m 611
2001-07-27 22:11:10 C 18 02 44.48 +35 06 57.7 d 620
2001-07-27 22:11:58 C 18 02 45.46 +35 06 36.4 d 620
2001-07-28 20:25:55 C 18 27 14.30 +26 13 11.6 15.4 152
2001-07-28 20:28:14 C 18 27 16.08 +26 12 22.8 15.5 152
2001-07-28 20:29:41 C 18 27 17.13 +26 11 54.0 15.2 152
2001-07-28 21:22:30 C 18 28 01.05 +25 54 42.2 c 046
2001-07-28 21:23:44 C 18 28 01.92 +25 54 17.1 c 046
2001-07-28 21:24:12 C 18 28 02.27 +25 54 07.7 c 046
2001-07-28 21:25:24 C 18 28 03.13 +25 53 43.0 c 046
2001-07-28 21:26:11 C 18 28 03.72 +25 53 27.2 c 046
2001-07-28 21:26:41 C 18 28 04.09 +25 53 17.2 c 046
2001-07-28 21:29:24 C 18 28 06.06 +25 52 21.6 046
2001-07-28 21:30:54 C 18 28 07.15 +25 51 51.1 046
2001-07-28 21:32:46 C 18 28 08.53 +25 51 12.9 046
2001-07-28 21:34:34 C 18 28 09.84 +25 50 35.9 046
2001-07-28 21:36:03 C 18 28 10.93 +25 50 05.7 046
2001-07-29 00:01:07 C 18 29 58.83 +25 02 41.6 17.0 939
2001-07-29 00:04:09 C 18 30 01.11 +25 01 42.1 15.3 939
2001-07-29 00:15:16 C 18 30 08.81 +24 57 59.8 15.0 939
2001-07-29 00:20:20 C 18 30 12.40 +24 56 17.3 17.3 939
2001-07-29 01:21:49 C 18 30 55.30 +24 35 54.1 15.2 939
2001-07-29 01:26:51 C 18 30 58.85 +24 34 13.7 15.2 939
2001-07-29 03:35:25 C 18 33 02.74 +23 53 27.8 i 726
2001-07-29 03:37:54 C 18 33 04.44 +23 52 42.5 i 726
2001-07-29 03:40:25 C 18 33 05.96 +23 51 54.3 i 726
2001-07-29 03:42:54 C 18 33 07.55 +23 51 07.9 i 726
2001-07-29 03:45:25 C 18 33 09.15 +23 50 21.8 i 726
2001-07-29 03:47:53 C 18 33 10.74 +23 49 34.8 i 726
2001-07-29 03:57:12 C 18 33 16.94 +23 47 41.2 d 739
2001-07-29 04:07:01 C 18 33 35.17 +23 44 58.0 c 670
2001-07-29 04:09:07 C 18 33 24.62 +23 44 01.3 d 739
2001-07-29 04:14:22 C 18 33 27.88 +23 42 23.5 d 739
2001-07-29 05:46:05 C 18 34 35.26 +23 14 51.7 c 670
2001-07-29 07:24:35 C 18 35 32.83 +22 45 07.3 c 670
2001-07-29 20:55:02 C 18 44 07.11 +19 03 05.9 151
2001-07-29 20:56:12 C 18 44 07.70 +19 02 47.5 151
2001-07-29 20:57:15 C 18 44 08.14 +19 02 32.7 151
2001-07-29 21:00:32 C 18 44 09.61 +19 01 44.4 151
2001-07-29 21:01:06 C 18 44 09.96 +19 01 36.2 151
2001-07-29 21:03:50 C 18 44 11.14 +19 00 54.9 151
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)