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
2004-07-27 20:57:34 C 17 43 10.84 +27 06 02.2 094
2004-07-27 21:51:57 C 17 44 20.68 +26 45 59.7 094
2004-07-27 21:52:45 C 17 44 21.71 +26 45 41.8 094
2004-07-27 21:53:34 C 17 44 22.78 +26 45 23.5 094
2004-07-27 21:54:24 C 17 44 23.82 +26 45 05.2 094
2004-07-27 21:55:14 C 17 44 24.88 +26 44 46.9 094
2004-07-27 21:56:02 C 17 44 25.92 +26 44 29.0 094
2004-07-27 21:56:51 C 17 44 26.96 +26 44 10.8 094
2004-07-27 21:57:41 C 17 44 28.00 +26 43 52.8 094
2004-07-27 21:58:29 C 17 44 29.06 +26 43 34.7 094
2004-07-27 21:59:19 C 17 44 30.12 +26 43 16.5 094
2004-07-27 22:00:08 C 17 44 31.19 +26 42 58.0 094
2004-07-27 22:00:58 C 17 44 32.22 +26 42 40.1 094
2004-07-28 03:49:05 C 17 52 21.64 +24 43 09.1 r 649
2004-07-28 03:52:04 C 17 52 24.91 +24 42 08.8 r 649
2004-07-28 03:55:03 C 17 52 28.18 +24 41 08.4 r 649
2004-07-28 03:58:03 C 17 52 31.46 +24 40 07.9 r 649
2004-07-28 04:01:02 C 17 52 34.72 +24 39 07.6 r 649
2004-07-28 04:04:00 C 17 52 37.98 +24 38 07.3 r 649
2004-07-28 20:29:44 C 18 10 00.26 +19 35 56.1 c 639
2004-07-28 20:32:36 C 18 10 02.69 +19 35 08.0 c 639
2004-07-28 20:34:07 C 18 10 03.91 +19 34 43.3 c 639
2004-07-28 20:38:40 C 18 10 07.65 +19 33 28.1 c 639
2004-07-28 20:42:17 C 18 10 13.06 +19 32 53.3 r 185
2004-07-28 20:43:05 C 18 10 13.66 +19 32 39.7 r 185
2004-07-28 20:44:32 C 18 10 14.93 +19 32 15.6 r 185
2004-07-28 20:46:37 C 18 10 14.25 +19 31 16.3 c 639
2004-07-28 20:47:21 C 18 10 17.17 +19 31 30.1 r 185
2004-07-28 20:49:05 C 18 10 18.59 +19 31 01.4 r 185
2004-07-28 20:51:20 C 18 10 18.02 +19 29 59.5 c 639
2004-07-28 20:53:31 C 18 10 19.77 +19 29 24.2 c 639
2004-07-28 20:55:56 C 18 10 21.70 +19 28 45.2 c 639
2004-07-28 20:58:37 C 18 10 23.94 +19 28 00.1 c 639
2004-07-28 21:04:26 C 18 10 28.66 +19 26 24.8 c 639
2004-07-29 21:10:37 C 18 28 35.20 +13 44 38.2 r 240
2004-07-29 21:13:20 C 18 28 36.69 +13 44 04.5 r 240
2004-07-29 21:13:52 C 18 28 36.99 +13 43 58.0 r 240
2004-07-29 21:14:59 C 18 28 37.58 +13 43 44.8 r 240
2004-07-29 21:17:09 C 18 28 38.77 +13 43 18.2 r 240
2004-07-29 21:19:50 C 18 28 40.22 +13 42 45.3 r 240
2004-07-29 21:20:23 C 18 28 40.53 +13 42 38.7 r 240
2004-07-29 21:21:28 C 18 28 41.10 +13 42 25.6 r 240
2004-07-29 21:22:33 C 18 28 41.69 +13 42 12.3 r 240
2004-07-29 21:23:37 C 18 28 42.29 +13 41 59.5 r 240
2004-07-29 21:24:41 C 18 28 42.87 +13 41 46.1 r 240
2004-07-29 21:25:47 C 18 28 43.46 +13 41 32.9 r 240
2004-07-30 22:43:40 C 18 41 55.78 +09 15 46.7 c A48
2004-07-30 22:44:03 C 18 41 55.94 +09 15 43.7 c A48
2004-07-30 22:44:24 C 18 41 56.06 +09 15 40.0 c A48
2004-07-30 22:44:47 C 18 41 56.24 +09 15 36.3 c A48
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)