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
2024-04-29 10:23:20 C 14 59 31.287 +43 23 21.76 X F52
2024-04-29 10:40:32 C 14 59 29.994 +43 23 28.35 X F52
2024-04-30 20:19:15 C 14 57 04.929 +43 35 20.57 t M35
2024-04-30 21:46:00 C 14 56 58.654 +43 35 50.03 t M35
2024-05-01 11:13:54 C 14 56 00.802 +43 40 09.84 V T05
2024-05-01 11:18:30 C 14 56 00.470 +43 40 11.57 V T05
2024-05-01 11:29:32 C 14 55 59.585 +43 40 14.27 V T05
2024-05-01 12:22:01 C 14 55 55.733 +43 40 30.47 V T05
2024-05-09 10:02:03 C 14 43 00.922 +44 13 47.06 V T05
2024-05-09 11:02:17 C 14 42 56.911 +44 13 49.58 V T05
2024-05-09 11:03:35 C 14 42 56.786 +44 13 49.69 V T05
2024-05-09 11:08:08 C 14 42 56.486 +44 13 49.62 V T05
2024-05-09 11:15:36 C 14 42 56.042 +44 13 50.81 V T05
2024-05-11 06:29:33 C 14 40 13.278 +44 14 49.70 V G96
2024-05-11 06:37:30 C 14 40 12.774 +44 14 50.03 V G96
2024-05-11 06:45:37 C 14 40 12.263 +44 14 49.96 V G96
2024-05-11 06:53:39 C 14 40 11.737 +44 14 49.96 V G96
2024-05-13 09:03:05 C 14 37 10.817 +44 13 16.10 V T05
2024-05-13 09:06:59 C 14 37 10.572 +44 13 15.92 V T05
2024-05-13 09:11:33 C 14 37 10.289 +44 13 16.03 V T05
2024-05-13 09:22:39 C 14 37 09.624 +44 13 14.74 V T05
2024-05-13 11:02:35 C 14 37 03.502 +44 13 09.01 V T05
2024-05-14 20:44:11 C 14 35 07.649 +44 10 23.88 q M19
2024-05-14 20:47:37 C 14 35 07.478 +44 10 24.60 q M19
2024-05-14 20:51:04 C 14 35 07.361 +44 10 24.49 q M19
2024-05-14 20:54:30 C 14 35 07.075 +44 10 24.02 q M19
2024-05-14 20:57:57 C 14 35 06.871 +44 10 23.92 q M19
2024-05-14 21:01:22 C 14 35 06.739 +44 10 22.76 q M19
2024-05-14 21:04:48 C 14 35 06.422 +44 10 21.50 q M19
2024-05-14 21:08:15 C 14 35 06.283 +44 10 21.94 q M19
2024-05-14 21:11:42 C 14 35 06.173 +44 10 21.97 q M19
2024-05-22 11:39:55 C 14 25 56.146 +43 36 17.05 X F52
2024-05-22 11:56:52 C 14 25 55.376 +43 36 12.23 X F52
2024-05-22 12:13:55 C 14 25 54.608 +43 36 07.52 X F52
2024-05-22 12:30:51 C 14 25 53.837 +43 36 02.61 X F52
2024-05-25 12:39:47 C 14 22 55.909 +43 14 38.90 X F52
2024-05-25 12:56:48 C 14 22 55.249 +43 14 32.97 X F52
2024-05-25 13:13:54 C 14 22 54.572 +43 14 27.19 X F52
2024-05-25 13:31:13 C 14 22 53.903 +43 14 21.30 X F52
2024-05-27 11:23:30 C 14 21 12.920 +42 58 46.38 X F51
2024-05-27 11:39:21 C 14 21 12.339 +42 58 40.45 X F51
2024-05-27 11:55:10 C 14 21 11.760 +42 58 34.58 X F51
2024-05-27 12:09:54 C 14 21 11.221 +42 58 29.20 X F52
2024-05-27 12:11:05 C 14 21 11.177 +42 58 28.71 X F51
2024-05-27 12:28:48 C 14 21 10.530 +42 58 22.07 X F52
2024-05-27 12:47:40 C 14 21 09.860 +42 58 15.15 X F52
2024-05-27 13:06:35 C 14 21 09.173 +42 58 08.00 X F52
2024-05-28 06:12:21 C 14 20 34.354 +42 51 56.95 V G96
2024-05-28 06:19:51 C 14 20 34.091 +42 51 54.18 V G96
2024-05-28 06:27:20 C 14 20 33.824 +42 51 51.37 V G96