163697 (2003 EF54)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4731023031 ± 2.02e-08
Semi-major axis (a)1.6089409988 AU ± 2.43e-09
Inclination (i)2.95385920° ± 2.05e-06
Long. of Asc. Node (Ω)268.45031910° ± 8.82e-05
Arg. of Perihelion (ω)353.83324800° ± 8.64e-05
Mean Anomaly (M)9.45753508° ± 7.10e-06
Mean Motion (n)0.4829499200°/day ± 1.09e-09
Perihelion dist (q)0.84774731 AU ± 3.25e-08
Aphelion dist (Q)2.37013469 AU ± 3.27e-08
Orbital Period2.04084573 yr ± 4.62e-09
Physical Parameters
H (abs. magnitude)20.08
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.464″
Uncertainty0
Orbit TypeApollo
MOID0.042363 AU
Observations Used217
Oppositions6
Arc Total2003-2015
First Observation Used2003-03-12
Last Observation Used2015-01-16
Observations (225)
Date Type RA Dec Mag Band Observatory
2003-07-31 14:34:31 C 02 41 06.312 +20 31 29.58 o 568
2003-07-31 14:37:36 C 02 41 06.478 +20 31 30.72 o 568
2003-08-05 10:21:10 C 02 46 43.27 +21 07 46.5 d 291
2003-08-05 10:27:09 C 02 46 43.55 +21 07 48.5 d 291
2003-08-05 10:33:23 C 02 46 43.79 +21 07 50.4 d 291
2003-09-19 09:32:25 C 02 45 11.79 +22 35 33.8 d 291
2003-09-19 09:39:32 C 02 45 11.37 +22 35 32.4 d 291
2003-09-19 09:46:35 C 02 45 10.96 +22 35 31.1 d 291
2005-01-17 15:19:17 C 11 07 33.65 +00 40 58.2 o F65
2005-01-17 15:22:58 C 11 07 33.72 +00 40 57.0 o F65
2005-01-17 15:26:34 C 11 07 33.75 +00 40 56.1 o F65
2005-02-20 07:32:44 C 10 54 18.87 -02 15 01.9 r 448
2005-02-20 07:45:14 C 10 54 18.10 -02 15 02.8 r 448
2005-02-20 07:58:48 C 10 54 17.30 -02 15 04.5 r 448
2005-03-11 09:07:39 C 10 14 51.56 -01 50 43.9 18.9 c 704
2005-03-11 09:25:08 C 10 14 49.38 -01 50 41.9 19.1 c 704
2005-03-11 09:40:14 C 10 14 47.67 -01 50 38.8 19.1 c 704
2005-03-11 09:56:57 C 10 14 45.74 -01 50 33.1 19.0 c 704
2005-03-17 06:53:14 C 09 57 41.64 -01 17 42.4 r 703
2005-03-17 07:04:48 C 09 57 40.09 -01 17 39.4 r 703
2005-03-17 07:16:19 C 09 57 38.54 -01 17 35.5 r 703
2005-03-17 07:27:52 C 09 57 36.93 -01 17 32.9 r 703
2005-03-27 20:42:36 C 09 23 12.41 +00 06 15.0 r 170
2005-03-27 20:44:21 C 09 23 12.13 +00 06 16.1 r 170
2005-03-27 20:46:58 C 09 23 11.76 +00 06 16.8 r 170
2005-04-04 04:46:44 C 08 57 30.92 +01 17 56.4 r 703
2005-04-04 04:58:40 C 08 57 29.05 +01 18 01.9 r 703
2005-04-04 05:23:01 C 08 57 25.16 +01 18 12.0 r 703
2005-09-11 03:52:40 C 02 12 11.80 +21 47 58.0 r 941
2005-09-11 04:00:24 C 02 12 11.24 +21 47 56.5 r 941
2005-09-11 04:05:33 C 02 12 10.92 +21 47 55.1 r 941
2005-10-06 06:44:56 C 01 20 37.89 +16 44 15.2 c 691
2005-10-06 07:09:56 C 01 20 35.63 +16 43 58.8 c 691
2005-10-06 07:34:54 C 01 20 33.39 +16 43 43.0 c 691
2005-10-10 05:47:24 C 01 12 41.37 +15 42 30.3 c 691
2005-10-10 06:12:23 C 01 12 39.28 +15 42 14.5 c 691
2005-10-10 06:37:18 C 01 12 37.13 +15 41 58.6 c 691
2007-03-12 02:54:43 C 08 51 02.75 +09 15 33.3 21.2 o H55
2007-03-12 03:36:49 C 08 50 58.91 +09 15 46.5 20.5 o H55
2007-03-12 04:27:46 C 08 50 54.31 +09 16 06.0 21.6 o H55
2007-08-12 00:36:21 C 02 19 50.99 +26 38 07.8 o 151
2007-08-12 00:38:32 C 02 19 50.82 +26 38 07.3 o 151
2007-08-12 00:40:43 C 02 19 50.61 +26 38 06.6 o 151
2007-08-12 00:44:17 C 02 19 50.12 +26 38 04.7 o 151
2007-08-12 00:48:43 C 02 19 49.59 +26 38 02.6 o 151
2007-08-12 00:50:02 C 02 19 49.42 +26 38 02.2 o 151
2007-08-25 22:53:02 C 01 41 20.86 +23 50 44.5 o 151
2007-08-25 22:55:12 C 01 41 20.58 +23 50 43.7 o 151
2007-08-25 23:01:45 C 01 41 19.85 +23 50 39.8 o 151
2007-09-05 10:42:50 C 01 11 51.54 +20 51 58.1 r 703