4257 Ubasti (1987 QA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4683594313 ± 4.35e-09
Semi-major axis (a)1.6471372987 AU ± 3.96e-10
Inclination (i)40.72180734° ± 5.74e-07
Long. of Asc. Node (Ω)169.14106442° ± 8.38e-07
Arg. of Perihelion (ω)278.95769231° ± 8.58e-07
Mean Anomaly (M)347.42839566° ± 6.71e-07
Mean Motion (n)0.4662486353°/day ± 1.68e-10
Perihelion dist (q)0.87568501 AU ± 7.17e-09
Aphelion dist (Q)2.41858959 AU ± 7.19e-09
Orbital Period2.11394996 yr ± 7.62e-10
Physical Parameters
H (abs. magnitude)15.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.081″
Uncertainty0
Orbit TypeApollo
MOID0.169642 AU
Observations Used2750
Gaia Obs Used109
Oppositions15
Arc Total1987-2026
First Observation Used1987-08-23
Last Observation Used2026-04-08
Observations (2997)
Date Type RA Dec Mag Band Observatory
2005-06-13 07:15:16 C 14 29 43.58 +40 13 31.4 r 703
2006-08-08 22:29:48 C 00 15 24.18 +21 05 31.4 18.2 r 084
2006-08-08 22:34:57 C 00 15 24.45 +21 05 27.4 17.5 r 084
2006-08-09 23:32:54 C 00 16 25.26 +20 48 28.3 17.5 r 084
2006-08-09 23:38:04 C 00 16 25.46 +20 48 24.0 17.6 r 084
2006-08-10 22:34:13 C 00 17 21.01 +20 31 38.9 17.6 r 084
2006-08-11 23:19:18 C 00 18 20.12 +20 12 19.2 17.5 r 084
2006-08-12 22:23:41 C 00 19 14.83 +19 53 00.8 16.8 r 084
2006-08-16 23:08:49 C 00 22 57.12 +18 17 25.8 17.3 r 084
2006-08-16 23:13:59 C 00 22 57.28 +18 17 20.4 17.3 r 084
2006-08-17 23:16:46 C 00 23 50.87 +17 49 27.4 17.0 r 084
2006-08-17 23:21:56 C 00 23 51.04 +17 49 21.1 16.9 r 084
2006-08-18 22:36:18 C 00 24 42.29 +17 20 39.6 17.1 r 084
2006-08-18 22:41:28 C 00 24 42.46 +17 20 32.8 17.1 r 084
2006-08-18 22:41:37 C 00 24 42.92 +17 20 36.2 o J86
2006-08-18 22:42:48 C 00 24 42.95 +17 20 34.6 o J86
2006-08-18 22:44:02 C 00 24 43.01 +17 20 33.4 o J86
2006-08-19 23:20:03 C 00 25 35.85 +16 48 09.0 16.9 r 084
2006-08-19 23:25:13 C 00 25 36.01 +16 48 02.4 16.9 r 084
2006-08-21 22:53:26 C 00 27 17.52 +15 39 30.7 o J86
2006-08-21 22:57:29 C 00 27 17.66 +15 39 24.2 o J86
2006-08-21 23:01:50 C 00 27 17.81 +15 39 17.4 o J86
2006-08-22 00:13:27 C 00 27 20.13 +15 37 28.2 o J86
2006-08-22 01:23:08 C 00 27 22.33 +15 35 40.8 o J86
2006-08-22 01:27:29 C 00 27 22.46 +15 35 34.6 o J86
2006-08-26 07:48:38 C 00 30 50.13 +12 34 50.1 H68
2006-08-26 07:55:47 C 00 30 50.37 +12 34 35.7 H68
2006-08-26 08:14:41 C 00 30 50.80 +12 33 56.3 H68
2006-08-26 08:55:03 C 00 30 52.40 +12 32 36.7 16.3 c 704
2006-08-26 09:10:03 C 00 30 52.83 +12 32 06.5 16.4 c 704
2006-08-26 09:25:01 C 00 30 53.25 +12 31 36.2 16.5 c 704
2006-08-27 08:37:52 C 00 31 38.45 +11 43 29.7 H68
2006-08-27 09:11:44 C 00 31 39.40 +11 42 16.7 H68
2006-08-27 09:34:31 C 00 31 40.03 +11 41 27.8 H68
2006-08-28 06:12:31 C 00 32 20.89 +10 56 08.8 16.6 o G63
2006-08-28 06:15:27 C 00 32 20.99 +10 56 01.6 16.2 o G63
2006-08-28 06:18:43 C 00 32 21.11 +10 55 55.4 16.5 o G63
2006-08-28 06:20:49 C 00 32 21.09 +10 55 47.4 16.6 o G63
2006-08-28 06:23:11 C 00 32 21.25 +10 55 43.1 16.8 o G63
2006-08-29 07:25:47 C 00 33 08.67 +09 57 37.1 r 703
2006-08-29 07:34:21 C 00 33 08.92 +09 57 16.7 r 703
2006-08-29 07:42:55 C 00 33 09.14 +09 56 56.3 r 703
2006-08-29 07:51:28 C 00 33 09.39 +09 56 35.8 r 703
2006-08-29 22:04:34 C 00 33 35.94 +09 21 46.6 16.5 r 084
2006-08-29 22:06:42 C 00 33 36.01 +09 21 41.5 16.5 r 084
2006-08-30 00:25:04 C 00 33 39.93 +09 15 56.7 16.4 r 084
2006-08-30 00:27:12 C 00 33 40.02 +09 15 51.9 16.6 r 084
2006-08-30 07:08:51 C 00 33 53.06 +08 59 06.5 16.4 c 704
2006-08-30 07:25:02 C 00 33 53.49 +08 58 25.6 16.7 c 704
2006-08-30 07:41:11 C 00 33 53.93 +08 57 44.5 16.7 c 704