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
2009-08-20 20:46:13 C 18 20 32.98 +27 59 14.6 w 160
2009-08-20 20:48:35 C 18 20 35.81 +27 59 03.1 w 160
2009-08-22 20:38:35 C 19 11 48.58 +24 00 59.6 c 127
2009-08-22 20:41:35 C 19 11 51.22 +24 00 44.3 c 127
2009-08-22 20:48:38 C 19 11 57.47 +24 00 09.2 c 127
2009-08-23 20:36:09 C 19 32 08.34 +22 02 52.1 c 127
2009-08-23 20:41:40 C 19 32 12.53 +22 02 25.4 c 127
2009-08-23 20:51:01 C 19 32 19.60 +22 01 40.8 c 127
2009-08-23 20:53:08 C 19 32 21.21 +22 01 30.8 c 127
2009-08-24 19:37:43 C 19 48 51.96 +20 15 43.2 r A97
2009-08-24 19:41:56 C 19 48 54.71 +20 15 24.5 r A97
2009-08-24 19:46:09 C 19 48 57.43 +20 15 06.7 r A97
2009-08-24 19:58:47 C 19 49 05.59 +20 14 09.7 r A97
2009-08-24 20:02:59 C 19 49 08.34 +20 13 50.9 r A97
2009-08-24 20:07:11 C 19 49 11.07 +20 13 31.8 r A97
2009-08-26 14:56:02 C 20 14 13.25 +17 18 07.8 c D21
2009-08-26 14:57:19 C 20 14 13.85 +17 18 02.9 c D21
2009-08-26 14:58:38 C 20 14 14.49 +17 17 57.8 c D21
2009-08-26 21:01:40 C 20 17 19.10 +16 53 09.0 c J05
2009-08-26 21:03:12 C 20 17 19.83 +16 53 03.2 c J05
2009-08-26 21:05:30 C 20 17 20.91 +16 52 54.6 c J05
2009-08-30 19:46:34 C 20 53 11.79 +12 03 03.8 r A97
2009-08-30 19:53:17 C 20 53 13.62 +12 02 47.4 r A97
2009-08-30 19:59:19 C 20 53 15.32 +12 02 32.2 r A97
2009-08-30 22:34:44 C 20 53 58.18 +11 56 12.3 o B88
2009-08-30 22:37:05 C 20 53 58.82 +11 56 06.2 o B88
2009-08-30 22:39:26 C 20 53 59.45 +11 56 00.8 o B88
2009-09-05 20:35:52 C 21 24 05.59 +07 27 26.2 v A97
2009-09-05 20:39:14 C 21 24 06.04 +07 27 20.4 v A97
2009-09-07 14:16:46 C 21 30 10.42 +06 31 09.9 m 355
2009-09-07 14:18:50 C 21 30 10.65 +06 31 07.6 m 355
2009-09-07 14:21:57 C 21 30 11.03 +06 31 03.0 m 355
2009-09-07 20:47:40 C 21 31 04.63 +06 22 53.7 w 160
2009-09-07 20:50:04 C 21 31 04.92 +06 22 50.3 w 160
2009-09-07 20:52:29 C 21 31 05.21 +06 22 47.1 w 160
2009-09-08 20:38:21 C 21 34 08.72 +05 54 17.4 r C01
2009-09-08 20:39:42 C 21 34 08.84 +05 54 15.9 r C01
2009-09-08 21:32:47 C 21 34 14.92 +05 53 14.8 r C01
2009-09-08 21:34:10 C 21 34 15.10 +05 53 13.3 r C01
2009-09-09 20:19:45 C 21 36 59.18 +05 27 54.8 r C01
2009-09-09 20:21:07 C 21 36 59.32 +05 27 53.4 r C01
2009-09-09 21:09:24 C 21 37 04.47 +05 27 01.7 r C01
2009-09-09 21:10:47 C 21 37 04.64 +05 27 00.2 r C01
2009-09-11 04:17:43 C 21 40 32.08 +04 55 15.9 r 703
2009-09-11 04:24:49 C 21 40 32.73 +04 55 09.5 r 703
2009-09-11 04:38:45 C 21 40 34.06 +04 54 55.0 r 703
2009-09-12 05:30:59 C 21 43 06.60 +04 31 20.5 17.8 c 704
2009-09-12 05:47:41 C 21 43 08.05 +04 31 05.0 18.2 c 704
2009-09-12 06:04:24 C 21 43 09.55 +04 30 50.1 18.4 c 704
2009-09-19 22:03:28 C 21 58 21.58 +02 16 45.8 v B15