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
2020-05-13 09:55:52 C 17 17 03.80 +39 06 51.2 V 703
2020-05-16 10:03:00 C 17 13 03.17 +39 39 25.9 V G96
2020-05-16 10:10:34 C 17 13 02.74 +39 39 29.2 V G96
2020-05-16 10:18:08 C 17 13 02.29 +39 39 32.2 V G96
2020-05-16 12:48:19 C 17 12 53.745 +39 40 36.25 U F51
2020-05-16 13:06:30 C 17 12 52.671 +39 40 43.74 U F51
2020-05-16 13:27:02 C 17 12 51.456 +39 40 52.22 U F51
2020-05-16 13:49:31 C 17 12 50.135 +39 41 01.43 U F51
2020-05-17 11:45:47 C 17 11 34.37 +39 49 57.3 V T08
2020-05-17 11:49:46 C 17 11 34.12 +39 49 59.0 V T08
2020-05-17 11:59:45 C 17 11 33.58 +39 50 01.7 V T08
2020-05-17 12:16:20 C 17 11 32.53 +39 50 08.2 V T08
2020-05-18 12:06:30 C 17 10 08.744 +39 59 18.34 U F52
2020-05-18 12:22:43 C 17 10 07.749 +39 59 24.40 U F52
2020-05-18 12:38:57 C 17 10 06.765 +39 59 30.37 U F52
2020-05-18 12:55:09 C 17 10 05.778 +39 59 36.38 U F52
2020-05-24 13:10:49 C 17 01 15.978 +40 43 22.35 U F52
2020-05-24 13:28:42 C 17 01 14.825 +40 43 26.31 U F52
2020-05-24 13:46:39 C 17 01 13.667 +40 43 30.34 U F52
2020-05-27 09:15:20 C 16 56 57.01 +40 56 55.9 V 703
2020-05-27 09:22:00 C 16 56 56.69 +40 56 56.8 V 703
2020-05-27 09:28:39 C 16 56 56.25 +40 56 57.3 V 703
2020-05-27 09:35:17 C 16 56 55.72 +40 56 58.1 V 703
2020-05-29 11:49:26 C 16 53 42.978 +41 04 02.59 U F52
2020-05-29 12:06:27 C 16 53 41.851 +41 04 04.48 U F52
2020-05-29 12:23:28 C 16 53 40.725 +41 04 06.29 U F52
2020-05-29 12:40:27 C 16 53 39.616 +41 04 08.11 U F52
2020-06-03 08:46:26 C 16 46 14.39 +41 10 46.4 V G96
2020-06-03 08:53:55 C 16 46 13.90 +41 10 46.4 V G96
2020-06-03 09:01:22 C 16 46 13.41 +41 10 46.2 V G96
2020-06-03 09:08:51 C 16 46 12.93 +41 10 46.0 V G96
2020-06-07 13:26:39 C 16 39 55.669 +41 05 59.78 U F51
2020-06-07 13:43:28 C 16 39 54.622 +41 05 57.85 U F51
2020-06-07 14:00:17 C 16 39 53.559 +41 05 56.15 U F51
2020-06-07 14:17:09 C 16 39 52.517 +41 05 54.41 U F51
2020-06-09 07:46:18 C 16 37 20.65 +41 01 09.3 V G96
2020-06-09 07:53:12 C 16 37 20.20 +41 01 08.5 V G96
2020-06-09 08:00:05 C 16 37 19.78 +41 01 07.6 V G96
2020-06-09 08:06:57 C 16 37 19.35 +41 01 06.6 V G96
2020-06-09 12:26:39 C 16 37 03.509 +41 00 31.53 U F52
2020-06-09 12:40:50 C 16 37 02.636 +41 00 29.77 U F52
2020-06-09 12:55:00 C 16 37 01.763 +41 00 27.53 U F52
2020-06-10 15:54:09 C 16 35 24.80 +40 56 24.4 q D29
2020-06-10 16:17:04 C 16 35 23.41 +40 56 20.5 q D29
2020-06-13 11:54:27 C 16 31 25.946 +40 43 18.34 U F52
2020-06-13 12:15:18 C 16 31 24.710 +40 43 13.12 U F52
2020-06-13 12:36:06 C 16 31 23.516 +40 43 08.10 U F52
2020-06-27 05:55:53 C 16 15 03.33 +38 47 21.6 U I41
2020-06-27 06:52:13 C 16 15 00.92 +38 46 55.1 U I41
2020-06-27 07:23:00 C 16 14 59.62 +38 46 40.6 U I41