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
2026-03-25 00:50:15 C 13 11 01.41 +34 00 05.3 X C40
2026-03-25 00:51:59 C 13 11 01.27 +34 00 09.2 X C40
2026-03-25 08:10:06 C 13 10 27.631 +34 16 12.36 V 703
2026-03-25 08:13:28 C 13 10 27.340 +34 16 19.45 V 703
2026-03-25 08:16:41 C 13 10 27.062 +34 16 26.47 V 703
2026-03-25 08:19:57 C 13 10 26.803 +34 16 33.56 V 703
2026-03-26 06:32:15 C 13 08 43.663 +35 03 13.10 V G96
2026-03-26 06:40:21 C 13 08 42.997 +35 03 29.70 V G96
2026-03-26 06:48:26 C 13 08 42.328 +35 03 46.37 V G96
2026-03-26 06:56:32 C 13 08 41.658 +35 04 03.00 V G96
2026-03-26 10:08:56 C 13 08 26.758 +35 10 37.88 V T08
2026-03-26 10:28:11 C 13 08 25.152 +35 11 17.09 V T08
2026-03-26 10:59:36 C 13 08 22.538 +35 12 20.63 V T08
2026-03-26 11:06:22 C 13 08 21.970 +35 12 34.34 V T08
2026-03-27 07:20:12 C 13 06 49.000 +35 52 11.93 V 703
2026-03-27 07:23:38 C 13 06 48.733 +35 52 18.62 V 703
2026-03-27 07:27:03 C 13 06 48.438 +35 52 25.07 V 703
2026-03-27 07:30:30 C 13 06 48.164 +35 52 31.87 V 703
2026-03-28 06:31:46 C 13 05 03.782 +36 35 05.86 V 703
2026-03-28 06:35:05 C 13 05 03.512 +36 35 11.80 V 703
2026-03-28 06:38:24 C 13 05 03.250 +36 35 17.77 V 703
2026-03-28 06:41:43 C 13 05 02.987 +36 35 23.50 V 703
2026-03-28 08:31:13 C 13 04 55.193 +36 38 41.46 V T05
2026-03-28 09:08:17 C 13 04 52.226 +36 39 48.35 V T05
2026-03-28 09:13:02 C 13 04 51.847 +36 39 56.88 V T05
2026-03-28 09:21:02 C 13 04 51.199 +36 40 11.24 V T05
2026-03-28 19:49:11 B 13 04 04.572 +36 58 22.32 V 160
2026-03-28 19:52:20 B 13 04 04.305 +36 58 27.43 V 160
2026-03-28 19:55:29 B 13 04 04.075 +36 58 32.93 V 160
2026-03-29 05:39:21 C 13 03 20.538 +37 15 12.74 V 703
2026-03-29 05:42:37 C 13 03 20.257 +37 15 18.32 V 703
2026-03-29 05:45:54 C 13 03 20.020 +37 15 23.90 V 703
2026-03-29 05:49:10 C 13 03 19.742 +37 15 29.38 V 703
2026-03-29 06:44:41 C 13 03 15.347 +37 17 03.55 V 703
2026-03-29 06:48:06 C 13 03 15.073 +37 17 09.46 V 703
2026-03-29 06:51:31 C 13 03 14.846 +37 17 15.14 V 703
2026-03-29 06:54:55 C 13 03 14.540 +37 17 20.65 V 703
2026-03-30 22:10:55 C 13 00 23.309 +38 19 24.38 Z C23
2026-03-30 22:26:23 C 13 00 22.133 +38 19 47.96 Z C23
2026-03-31 00:06:21 B 13 00 14.712 +38 22 17.98 X Y84
2026-03-31 00:11:17 B 13 00 14.335 +38 22 25.43 X Y84
2026-03-31 00:16:08 B 13 00 13.968 +38 22 32.70 X Y84
2026-03-31 10:59:08 C 12 59 28.123 +38 38 20.87 V T05
2026-03-31 11:39:36 C 12 59 25.054 +38 39 18.86 V T05
2026-03-31 11:44:16 C 12 59 24.686 +38 39 25.60 V T05
2026-03-31 11:51:42 C 12 59 24.113 +38 39 36.22 V T05
2026-04-01 11:28:01 C 12 57 45.197 +39 12 20.16 V T08
2026-04-01 11:32:37 C 12 57 44.856 +39 12 26.17 V T08
2026-04-01 11:40:31 C 12 57 44.254 +39 12 36.68 V T08
2026-04-01 12:30:53 C 12 57 40.531 +39 13 43.07 V T08