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
2022-04-11 10:19:02 C 16 48 55.418 +33 03 12.60 V G96
2022-04-11 11:42:06 C 16 48 53.140 +33 04 38.82 V 703
2022-04-11 11:48:36 C 16 48 52.960 +33 04 45.95 V 703
2022-04-11 11:55:06 C 16 48 52.690 +33 04 52.54 V 703
2022-04-11 12:01:36 C 16 48 52.528 +33 04 58.80 V 703
2022-04-13 09:55:15 C 16 47 37.090 +33 51 54.29 V 703
2022-04-13 10:11:35 C 16 47 36.514 +33 52 10.96 V 703
2022-04-13 10:19:57 C 16 47 36.200 +33 52 19.92 V 703
2022-04-22 10:23:39 C 16 39 28.760 +37 12 51.62 V 703
2022-04-22 10:31:30 C 16 39 28.336 +37 12 57.71 V 703
2022-04-22 10:39:15 C 16 39 27.932 +37 13 04.08 V 703
2022-04-22 10:46:59 C 16 39 27.630 +37 13 09.88 V 703
2022-04-25 09:51:24 C 16 36 03.305 +38 10 31.62 V 703
2022-04-25 09:59:50 C 16 36 02.876 +38 10 38.06 V 703
2022-04-25 10:08:11 C 16 36 02.437 +38 10 45.01 V 703
2022-04-25 10:16:52 C 16 36 01.948 +38 10 52.57 V 703
2022-04-30 12:44:31 C 16 29 25.096 +39 38 03.94 U F52
2022-04-30 12:59:20 C 16 29 24.211 +39 38 13.57 U F52
2022-04-30 13:14:07 C 16 29 23.336 +39 38 23.00 U F52
2022-04-30 13:28:50 C 16 29 22.453 +39 38 32.47 U F52
2022-05-03 09:08:35 C 16 25 22.516 +40 19 52.46 V 703
2022-05-03 09:16:48 C 16 25 21.929 +40 19 58.30 V 703
2022-05-03 09:24:55 C 16 25 21.472 +40 20 02.65 V 703
2022-05-03 09:32:53 C 16 25 21.025 +40 20 07.84 V 703
2022-05-07 08:25:25 C 16 19 24.748 +41 09 29.99 V 703
2022-05-07 08:32:40 C 16 19 24.240 +41 09 33.16 V 703
2022-05-07 08:40:04 C 16 19 23.848 +41 09 37.40 V 703
2022-05-07 08:47:14 C 16 19 23.300 +41 09 40.32 V 703
2022-05-08 09:11:19 C 16 17 48.689 +41 20 42.86 V G96
2022-05-08 09:18:59 C 16 17 48.174 +41 20 46.18 V G96
2022-05-08 09:26:36 C 16 17 47.663 +41 20 49.63 V G96
2022-05-08 09:34:08 C 16 17 47.166 +41 20 52.98 V G96
2022-05-11 09:04:32 C 16 13 05.027 +41 49 16.21 V 703
2022-05-11 09:12:29 C 16 13 04.523 +41 49 18.01 V 703
2022-05-11 09:28:04 C 16 13 03.392 +41 49 24.35 V 703
2022-05-18 08:14:21 C 16 01 51.492 +42 32 44.05 V 703
2022-05-18 08:22:13 C 16 01 51.074 +42 32 46.10 V 703
2022-05-18 08:37:50 C 16 01 50.200 +42 32 46.25 V 703
2022-05-20 08:15:51 C 15 58 38.845 +42 39 23.90 V G96
2022-05-20 08:23:17 C 15 58 38.320 +42 39 25.02 V G96
2022-05-20 08:30:41 C 15 58 37.808 +42 39 25.52 V G96
2022-05-20 08:38:06 C 15 58 37.340 +42 39 25.52 V G96
2022-05-21 08:45:46 C 15 57 01.163 +42 41 48.70 V 703
2022-05-21 09:01:04 C 15 57 00.061 +42 41 50.60 V 703
2022-05-21 09:08:44 C 15 56 59.629 +42 41 50.75 V 703
2022-05-24 08:18:50 C 15 52 19.999 +42 45 10.12 V 703
2022-05-24 08:26:35 C 15 52 19.506 +42 45 09.61 V 703
2022-05-24 08:34:20 C 15 52 18.952 +42 45 09.11 V 703
2022-05-24 08:42:06 C 15 52 18.440 +42 45 09.40 V 703
2022-06-03 07:13:45 C 15 37 55.949 +42 18 39.31 V G96