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
2001-07-25 05:05:15 C 13 46 22.52 +64 01 52.8 c 699
2001-07-25 05:06:01 C 13 46 28.07 +64 01 48.1 c 699
2001-07-25 05:06:51 C 13 46 33.93 +64 01 42.0 c 699
2001-07-25 06:05:17 C 13 53 21.70 +63 54 53.4 919
2001-07-25 06:06:00 C 13 53 26.70 +63 54 49.0 919
2001-07-25 06:06:38 C 13 53 31.26 +63 54 43.2 919
2001-07-25 06:07:12 C 13 53 35.07 +63 54 38.9 919
2001-07-25 06:07:45 C 13 53 38.96 +63 54 35.6 919
2001-07-25 06:36:37 C 13 57 02.90 +63 50 27.6 919
2001-07-25 06:37:17 C 13 57 08.16 +63 50 23.5 919
2001-07-25 06:37:52 C 13 57 11.41 +63 50 19.0 919
2001-07-25 06:38:34 C 13 57 16.34 +63 50 12.5 919
2001-07-25 06:39:10 C 13 57 21.24 +63 50 07.1 919
2001-07-25 06:40:10 C 13 57 28.50 +63 49 57.6 919
2001-07-25 06:41:24 C 13 57 36.61 +63 49 47.0 919
2001-07-25 06:42:18 C 13 57 43.18 +63 49 39.6 919
2001-07-25 06:43:11 C 13 57 49.52 +63 49 29.9 919
2001-07-25 07:57:39 C 14 06 39.00 +63 38 06.7 675
2001-07-25 07:59:02 C 14 06 48.82 +63 37 51.5 675
2001-07-25 08:00:10 C 14 06 56.80 +63 37 28.1 675
2001-07-25 08:01:18 C 14 07 04.91 +63 37 28.1 675
2001-07-25 08:03:13 C 14 07 18.68 +63 37 08.2 675
2001-07-25 08:04:55 C 14 07 30.72 +63 36 49.8 675
2001-07-25 08:06:02 C 14 07 38.74 +63 36 37.3 675
2001-07-25 21:01:32 C 15 32 43.30 +60 05 16.8 c 587
2001-07-25 21:03:10 C 15 32 54.80 +60 06 14.1 d 620
2001-07-25 21:03:32 C 15 32 54.29 +60 04 27.3 c 587
2001-07-25 21:04:45 C 15 33 03.48 +60 05 34.6 d 620
2001-07-25 21:05:30 C 15 33 07.57 +60 05 15.9 d 620
2001-07-25 21:05:32 C 15 33 05.34 +60 03 37.1 c 587
2001-07-25 21:06:22 C 15 33 12.42 +60 04 54.1 d 620
2001-07-25 21:12:03 C 15 33 44.57 +60 00 15.0 m 611
2001-07-25 21:14:37 C 15 33 58.67 +59 59 10.9 m 611
2001-07-25 21:16:03 C 15 34 06.61 +59 58 35.3 m 611
2001-07-25 21:17:13 C 15 34 13.03 +59 58 05.6 m 611
2001-07-25 21:18:13 C 15 34 18.42 +59 57 40.6 m 611
2001-07-25 21:19:10 C 15 34 23.82 +59 57 16.3 m 611
2001-07-25 22:05:58 C 15 38 35.18 +59 37 47.9 c 587
2001-07-25 22:08:08 C 15 38 46.97 +59 36 50.2 c 587
2001-07-25 22:10:22 C 15 38 59.20 +59 35 51.3 c 587
2001-07-25 22:34:08 C 15 41 21.88 +59 30 48.6 950
2001-07-25 22:34:28 C 15 41 23.34 +59 30 40.5 950
2001-07-25 22:40:49 C 15 41 56.72 +59 27 51.0 950
2001-07-25 22:41:09 C 15 41 58.29 +59 27 42.9 950
2001-07-26 00:41:13 C 15 52 21.69 +58 25 42.7 c 046
2001-07-26 00:41:34 C 15 52 23.51 +58 25 33.2 c 046
2001-07-26 00:41:55 C 15 52 25.35 +58 25 23.0 c 046
2001-07-26 00:42:16 C 15 52 26.94 +58 25 13.9 c 046
2001-07-26 00:43:16 C 15 52 32.34 +58 24 44.2 c 046
2001-07-26 00:43:50 C 15 52 35.28 +58 24 28.4 c 046
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)