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
2007-04-22 06:38:30 C 13 18 10.07 +44 20 52.2 18.3 c 704
2007-04-22 06:50:35 C 13 18 09.32 +44 20 54.7 18.3 c 704
2007-04-22 07:03:10 C 13 18 08.70 +44 20 59.2 18.4 c 704
2007-04-22 07:55:12 C 13 18 05.45 +44 21 08.0 r H45
2007-04-22 07:56:40 C 13 18 05.37 +44 21 07.5 r H45
2007-04-22 07:58:58 C 13 18 05.28 +44 21 08.4 r H45
2007-04-22 08:04:05 C 13 18 04.89 +44 21 09.0 r H45
2007-04-22 08:05:47 C 13 18 04.83 +44 21 10.1 r H45
2007-04-23 22:48:31 C 13 16 03.95 +44 28 37.6 c A24
2007-04-23 22:49:57 C 13 16 03.81 +44 28 37.8 c A24
2007-04-23 22:51:23 C 13 16 03.77 +44 28 37.9 c A24
2007-04-23 22:52:48 C 13 16 03.75 +44 28 38.0 c A24
2007-04-23 23:07:20 C 13 16 02.92 +44 28 40.4 c A24
2007-04-23 23:26:09 C 13 16 01.91 +44 28 43.4 c A24
2007-04-23 23:43:33 C 13 16 01.00 +44 28 45.9 c A24
2007-04-23 23:44:59 C 13 16 00.91 +44 28 46.2 c A24
2007-04-23 23:46:26 C 13 16 00.85 +44 28 46.8 c A24
2007-04-23 23:47:53 C 13 16 00.77 +44 28 46.8 c A24
2007-04-24 00:01:41 C 13 16 00.03 +44 28 48.7 c A24
2007-04-24 00:19:48 C 13 15 59.09 +44 28 51.5 c A24
2007-04-24 00:36:28 C 13 15 58.19 +44 28 53.7 c A24
2007-04-24 00:37:54 C 13 15 58.13 +44 28 54.4 c A24
2007-04-24 00:39:32 C 13 15 58.02 +44 28 54.8 c A24
2007-04-24 00:40:58 C 13 15 57.98 +44 28 54.6 c A24
2007-04-24 20:16:49 C 13 15 00.46 +44 31 44.9 c A24
2007-04-24 20:18:16 C 13 15 00.37 +44 31 44.1 c A24
2007-04-24 20:25:37 C 13 14 59.98 +44 31 45.8 c A24
2007-04-24 20:34:26 C 13 14 59.52 +44 31 46.7 c A24
2007-04-24 20:43:13 C 13 14 59.09 +44 31 48.0 c A24
2007-04-24 20:51:59 C 13 14 58.61 +44 31 49.6 c A24
2007-04-24 21:02:11 C 13 14 58.11 +44 31 51.1 c A24
2007-04-24 21:10:56 C 13 14 57.65 +44 31 52.7 c A24
2007-04-24 21:12:22 C 13 14 57.52 +44 31 53.1 c A24
2007-04-24 21:20:23 C 13 14 57.12 +44 31 54.0 c A24
2007-04-24 21:29:50 C 13 14 56.59 +44 31 55.6 c A24
2007-06-21 04:34:54 C 13 15 50.76 +35 57 56.9 r 703
2007-06-21 04:43:26 C 13 15 50.94 +35 57 54.2 r 703
2007-06-21 04:51:55 C 13 15 51.15 +35 57 50.0 r 703
2008-07-18 04:52:52 C 22 05 30.35 +29 30 08.5 o H55
2008-07-29 22:01:52 C 21 55 46.47 +28 59 02.3 r 106
2008-07-29 22:15:42 C 21 55 45.89 +28 58 58.6 r 106
2008-07-29 22:29:32 C 21 55 45.18 +28 58 55.3 r 106
2008-07-29 22:43:21 C 21 55 44.55 +28 58 50.9 r 106
2008-07-30 01:51:03 C 21 55 35.81 +28 58 01.6 c B37
2008-07-30 02:00:25 C 21 55 35.37 +28 57 58.6 c B37
2008-07-30 02:06:49 C 21 55 35.05 +28 57 56.8 c B37
2008-07-30 02:13:12 C 21 55 34.75 +28 57 55.1 c B37
2008-07-30 02:16:54 C 21 55 34.56 +28 57 53.9 c B37
2008-07-30 02:21:41 C 21 55 34.35 +28 57 53.0 c B37
2008-08-01 00:22:03 C 21 53 24.82 +28 43 50.3 c B37