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
2003-07-29 20:54:36 C 19 18 30.02 +22 25 55.8 d 170
2003-07-29 20:58:36 C 19 18 30.66 +22 24 46.9 d 170
2003-07-29 20:59:10 C 19 18 30.87 +22 24 36.5 d 170
2003-07-29 21:46:34 C 19 18 33.41 +22 09 40.5 r 557
2003-07-29 21:54:48 C 19 18 34.89 +22 07 14.6 r 557
2003-07-29 22:01:20 C 19 18 36.07 +22 05 18.5 r 557
2003-07-29 22:07:11 C 19 18 37.13 +22 03 34.9 r 557
2003-07-29 22:11:33 C 19 18 37.90 +22 02 18.1 r 557
2003-07-29 22:20:40 C 19 18 39.53 +21 59 36.5 r 557
2003-07-29 22:29:28 C 19 18 41.12 +21 57 01.0 r 557
2003-07-29 22:40:03 C 19 18 43.03 +21 53 54.0 r 557
2003-07-29 22:50:07 C 19 18 44.82 +21 50 56.8 r 557
2003-07-31 21:37:45 C 19 27 46.07 +11 38 35.1 c 204
2003-07-31 21:38:18 C 19 27 46.10 +11 38 29.0 c 204
2003-07-31 21:38:51 C 19 27 46.14 +11 38 24.0 c 204
2003-07-31 21:39:24 C 19 27 46.17 +11 38 18.2 c 204
2003-07-31 21:39:57 C 19 27 46.21 +11 38 13.7 c 204
2003-07-31 21:52:35 C 19 27 47.04 +11 36 10.8 c 204
2003-07-31 21:53:07 C 19 27 47.10 +11 36 05.8 c 204
2003-07-31 21:53:40 C 19 27 47.12 +11 36 01.1 c 204
2003-07-31 21:54:13 C 19 27 47.16 +11 35 55.7 c 204
2003-07-31 21:54:46 C 19 27 47.20 +11 35 50.5 c 204
2003-08-01 22:31:47 C 19 30 38.11 +08 07 16.2 A30
2003-08-01 22:36:09 C 19 30 38.34 +08 06 41.3 A30
2003-08-01 22:38:57 C 19 30 38.37 +08 06 19.4 A30
2003-08-01 22:46:23 C 19 30 38.55 +08 05 26.4 A30
2003-08-01 22:48:09 C 19 30 38.77 +08 05 12.8 A30
2003-08-01 22:49:24 C 19 30 38.85 +08 05 03.8 A30
2003-08-01 22:51:07 C 19 30 38.85 +08 04 51.0 A30
2003-08-01 22:54:12 C 19 30 39.02 +08 04 27.3 A30
2003-08-01 22:57:22 C 19 30 39.20 +08 04 05.0 A30
2003-08-01 22:59:40 C 19 30 39.25 +08 03 47.4 A30
2003-08-01 23:00:44 C 19 30 39.37 +08 03 40.0 A30
2003-08-01 23:01:49 C 19 30 39.30 +08 03 30.8 A30
2003-08-01 23:08:56 C 19 30 39.68 +08 02 38.6 A30
2003-08-01 23:11:34 C 19 30 40.00 +08 02 23.4 A30
2003-08-01 23:13:18 C 19 30 39.83 +08 02 08.0 A30
2003-08-01 23:16:46 C 19 30 40.06 +08 01 41.3 A30
2003-08-03 20:15:37 C 19 34 36.05 +03 32 21.5 c 198
2003-08-03 20:19:56 C 19 34 36.17 +03 32 00.6 c 198
2003-08-03 20:25:50 C 19 34 36.34 +03 31 31.9 c 198
2003-08-03 20:28:12 C 19 34 36.41 +03 31 20.7 c 198
2003-08-03 20:31:19 C 19 34 36.49 +03 31 05.7 c 198
2003-08-06 21:53:46 C 19 38 37.61 -01 00 31.0 c 198
2003-08-06 21:59:43 C 19 38 37.67 -01 00 47.8 c 198
2003-08-06 22:04:35 C 19 38 37.72 -01 01 01.6 c 198
2003-08-06 22:09:28 C 19 38 37.77 -01 01 15.4 c 198
2003-08-24 20:58:14 C 19 52 48.56 -09 38 18.6 o 950
2003-08-24 21:00:14 C 19 52 48.58 -09 38 19.2 o 950
2003-08-24 21:01:15 C 19 52 48.60 -09 38 19.8 o 950
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)