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
2022-02-03 12:23:27 C 15 59 48.10 +03 47 07.2 V 703
2022-02-03 12:31:00 C 15 59 48.70 +03 47 13.9 V 703
2022-02-03 12:38:34 C 15 59 49.12 +03 47 20.3 V 703
2022-02-08 11:58:50 C 16 08 24.50 +05 34 15.1 V 703
2022-02-08 12:06:28 C 16 08 25.11 +05 34 23.3 V 703
2022-02-08 12:14:05 C 16 08 25.64 +05 34 28.9 V 703
2022-02-08 12:21:43 C 16 08 26.11 +05 34 36.6 V 703
2022-02-20 11:40:00 C 16 26 31.66 +10 16 56.0 V 703
2022-02-20 11:55:26 C 16 26 32.54 +10 17 11.4 V 703
2022-02-20 12:03:10 C 16 26 32.96 +10 17 20.3 V 703
2022-03-05 11:53:47 C 16 41 28.80 +15 59 02.3 V 703
2022-03-05 12:01:16 C 16 41 29.12 +15 59 10.7 V 703
2022-03-05 12:08:46 C 16 41 29.43 +15 59 19.8 V 703
2022-03-05 12:16:15 C 16 41 29.70 +15 59 28.6 V 703
2022-03-13 11:53:04 C 16 47 49.89 +19 42 37.2 V 703
2022-03-13 12:00:40 C 16 47 50.07 +19 42 46.5 V 703
2022-03-13 12:08:17 C 16 47 50.38 +19 42 54.8 V 703
2022-03-13 12:15:54 C 16 47 50.54 +19 43 04.0 V 703
2022-03-13 13:56:09 C 16 47 53.30 +19 45 04.3 V T08
2022-03-13 13:59:26 C 16 47 53.44 +19 45 07.9 V T08
2022-03-13 14:03:22 C 16 47 53.65 +19 45 12.3 V T08
2022-03-13 14:17:59 C 16 47 53.91 +19 45 29.8 V T08
2022-03-15 09:52:50 C 16 49 00.27 +20 37 03.6 V G96
2022-03-15 10:00:18 C 16 49 00.44 +20 37 12.5 V G96
2022-03-15 10:07:45 C 16 49 00.60 +20 37 21.4 V G96
2022-03-15 10:15:12 C 16 49 00.77 +20 37 30.4 V G96
2022-03-17 10:40:18 C 16 50 05.29 +21 35 02.9 V 703
2022-03-17 11:03:13 C 16 50 05.78 +21 35 29.1 V 703
2022-03-28 09:52:36 C 16 53 00.52 +26 47 21.8 V 703
2022-03-28 10:00:11 C 16 53 00.54 +26 47 32.5 V 703
2022-03-28 10:07:45 C 16 53 00.47 +26 47 41.6 V 703
2022-04-01 11:10:33 C 16 52 45.278 +28 40 26.22 V 703
2022-04-01 11:18:19 C 16 52 45.214 +28 40 34.39 V 703
2022-04-01 11:26:07 C 16 52 45.181 +28 40 44.47 V 703
2022-04-01 11:33:54 C 16 52 45.023 +28 40 52.57 V 703
2022-04-05 10:47:31 C 16 51 46.350 +30 28 34.86 V 703
2022-04-05 10:55:07 C 16 51 46.260 +30 28 43.21 V 703
2022-04-05 11:02:42 C 16 51 46.256 +30 28 52.64 V 703
2022-04-05 11:10:17 C 16 51 46.044 +30 29 00.60 V 703
2022-04-08 10:35:57 C 16 50 33.194 +31 47 16.51 V 703
2022-04-08 10:43:30 C 16 50 33.029 +31 47 24.83 V 703
2022-04-08 10:51:03 C 16 50 32.932 +31 47 33.00 V 703
2022-04-08 10:58:36 C 16 50 32.734 +31 47 41.06 V 703
2022-04-10 09:30:36 C 16 49 32.131 +32 37 16.46 V 703
2022-04-10 09:38:24 C 16 49 31.933 +32 37 24.89 V 703
2022-04-10 09:46:12 C 16 49 31.681 +32 37 32.41 V 703
2022-04-10 09:54:01 C 16 49 31.537 +32 37 40.73 V 703
2022-04-11 09:56:21 C 16 48 56.023 +33 02 48.52 V G96
2022-04-11 10:03:53 C 16 48 55.836 +33 02 56.87 V G96
2022-04-11 10:11:26 C 16 48 55.595 +33 03 04.43 V G96