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
2023-07-06 10:00:35 C 00 54 32.882 +17 34 03.83 V G96
2023-07-06 10:08:47 C 00 54 33.750 +17 34 03.22 V G96
2023-07-08 13:52:24 C 01 00 05.189 +17 29 19.46 V T05
2023-07-08 13:56:18 C 01 00 05.556 +17 29 19.36 V T05
2023-07-08 14:10:19 C 01 00 07.063 +17 29 17.74 V T05
2023-07-08 14:27:13 C 01 00 08.921 +17 29 15.90 V T05
2023-07-14 13:37:45 C 01 16 09.089 +17 05 47.33 V T05
2023-07-14 13:42:21 C 01 16 09.605 +17 05 45.46 V T05
2023-07-14 14:13:45 C 01 16 13.090 +17 05 38.90 V T05
2023-07-14 14:29:30 C 01 16 14.916 +17 05 35.34 V T05
2023-07-15 06:46:20 C 01 18 08.549 +17 01 55.38 V W68
2023-07-15 06:50:55 C 01 18 09.151 +17 01 54.95 V W68
2023-07-15 07:07:11 C 01 18 11.052 +17 01 51.85 V W68
2023-07-15 07:29:00 C 01 18 13.594 +17 01 46.13 V W68
2023-07-20 14:27:43 C 01 33 33.775 +16 23 36.17 V T05
2023-07-20 14:30:19 C 01 33 34.044 +16 23 35.63 V T05
2023-07-20 14:34:53 C 01 33 34.534 +16 23 33.54 V T05
2023-07-20 14:42:17 C 01 33 35.534 +16 23 30.88 V T05
2023-07-26 14:03:48 C 01 52 18.127 +15 18 47.34 V T05
2023-07-26 14:08:24 C 01 52 18.742 +15 18 44.57 V T05
2023-07-26 14:23:46 C 01 52 20.782 +15 18 36.36 V T05
2023-07-26 14:38:18 C 01 52 22.740 +15 18 28.51 V T05
2023-07-28 07:08:38 C 01 57 58.622 +14 55 22.01 V W68
2023-07-28 07:35:48 C 01 58 02.395 +14 55 06.13 V W68
2023-07-28 07:44:18 C 01 58 03.576 +14 55 01.31 V W68
2023-07-30 14:15:49 C 02 05 49.817 +14 19 44.65 V T05
2023-07-30 14:34:23 C 02 05 52.454 +14 19 32.09 V T05
2023-07-30 14:39:35 C 02 05 53.203 +14 19 28.45 V T05
2023-07-30 14:51:25 C 02 05 54.912 +14 19 20.17 V T05
2023-07-31 07:43:20 C 02 08 22.860 +14 07 37.63 V W68
2023-07-31 07:45:58 C 02 08 23.237 +14 07 36.12 V W68
2023-07-31 07:54:59 C 02 08 24.540 +14 07 28.49 V W68
2023-07-31 08:16:01 C 02 08 27.619 +14 07 14.27 V W68
2023-08-05 01:53:10 C 02 25 49.786 +12 34 36.91 V M22
2023-08-05 01:55:46 C 02 25 50.297 +12 34 34.90 V M22
2023-08-05 02:04:19 C 02 25 51.643 +12 34 26.40 V M22
2023-08-05 02:18:44 C 02 25 53.880 +12 34 13.84 V M22
2023-08-11 03:17:38 C 02 50 13.978 +09 58 57.97 V M22
2023-08-11 03:49:54 C 02 50 19.591 +09 58 18.77 V M22
2023-08-11 04:04:28 C 02 50 22.150 +09 58 00.52 V M22
2023-08-13 02:56:42 C 02 58 49.258 +08 57 37.94 V M22
2023-08-13 03:02:38 C 02 58 50.340 +08 57 30.02 V M22
2023-08-13 03:07:13 C 02 58 51.139 +08 57 23.72 V M22
2023-08-13 03:28:16 C 02 58 54.967 +08 56 55.50 V M22
2023-08-15 08:00:32 C 03 08 45.202 +07 42 46.66 V W68
2023-08-15 08:05:07 C 03 08 46.152 +07 42 40.10 V W68
2023-08-15 08:12:59 C 03 08 47.539 +07 42 28.76 V W68
2023-08-15 08:28:56 C 03 08 50.602 +07 42 05.54 V W68
2023-08-17 02:00:53 C 03 16 53.974 +06 38 28.10 V M22
2023-08-17 02:32:39 C 03 17 00.134 +06 37 38.32 V M22