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
2009-09-19 22:08:08 C 21 58 21.87 +02 16 43.2 v B15
2009-09-19 22:15:08 C 21 58 22.33 +02 16 39.2 v B15
2009-09-19 22:19:12 C 21 58 22.61 +02 16 37.1 v B15
2009-09-20 02:49:43 C 21 58 43.07 +02 14 11.6 o 691
2009-09-20 03:24:39 C 21 58 45.27 +02 13 51.9 o 691
2009-09-20 03:59:33 C 21 58 47.46 +02 13 32.3 o 691
2009-09-28 03:39:43 C 22 10 50.73 +00 47 03.7 r 703
2009-09-28 03:48:17 C 22 10 51.16 +00 47 02.5 r 703
2009-09-28 03:57:00 C 22 10 51.56 +00 46 59.9 r 703
2009-09-28 04:05:46 C 22 10 52.06 +00 46 55.7 r 703
2011-01-14 10:07:57 C 09 06 33.08 +13 00 50.7 o 291
2011-01-14 10:13:19 C 09 06 32.75 +13 00 51.5 o 291
2011-01-14 10:18:44 C 09 06 32.46 +13 00 52.0 o 291
2013-01-17 11:34:35 C 08 24 32.188 +16 04 08.62 L F51
2013-01-17 11:36:31 C 08 24 32.052 +16 04 08.61 L F51
2013-01-17 11:58:37 C 08 24 30.392 +16 04 12.33 L F51
2013-01-17 12:18:53 C 08 24 28.865 +16 04 15.49 L F51
2013-01-17 12:20:47 C 08 24 28.720 +16 04 15.77 L F51
2013-01-17 12:41:07 C 08 24 27.201 +16 04 19.09 L F51
2013-02-10 09:46:43 C 07 39 50.942 +17 38 24.09 L F51
2013-02-10 10:31:06 C 07 39 47.618 +17 38 30.30 L F51
2013-02-10 10:53:19 C 07 39 45.965 +17 38 33.30 L F51
2015-01-16 08:23:37 C 07 55 10.779 +18 05 36.94 L F51
2015-01-16 08:41:12 C 07 55 09.430 +18 05 39.21 L F51
2015-01-16 08:58:55 C 07 55 08.071 +18 05 42.07 L F51