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
2020-06-27 07:36:42 C 16 14 59.04 +38 46 33.7 U I41
2020-06-28 06:33:46 C 16 14 04.214 +38 35 42.22 U F52
2020-06-28 07:12:24 C 16 14 02.630 +38 35 23.53 U F52
2020-06-28 07:31:43 C 16 14 01.819 +38 35 14.40 U F52
2020-06-30 08:53:00 C 16 12 09.507 +38 10 45.90 U F52
2020-06-30 09:10:08 C 16 12 08.825 +38 10 36.95 U F52
2020-06-30 09:27:14 C 16 12 08.177 +38 10 28.22 U F52
2020-06-30 09:44:22 C 16 12 07.558 +38 10 19.35 U F52
2020-07-02 09:46:26 C 16 10 26.898 +37 45 12.14 U F51
2020-07-02 10:21:56 C 16 10 25.645 +37 44 52.96 U F51
2020-07-02 10:39:44 C 16 10 25.046 +37 44 43.19 U F51
2020-07-04 11:22:30 C 16 08 51.600 +37 18 01.46 U F51
2020-07-04 11:39:59 C 16 08 51.058 +37 17 51.57 U F51
2020-07-04 11:57:27 C 16 08 50.507 +37 17 41.48 U F51
2020-07-21 07:43:36 C 16 01 26.310 +33 01 18.79 U F52
2020-07-21 08:00:26 C 16 01 26.170 +33 01 07.12 U F52
2020-07-21 08:17:16 C 16 01 26.038 +33 00 55.39 U F52
2020-07-21 08:34:09 C 16 01 25.918 +33 00 43.67 U F52
2020-07-25 06:44:31 C 16 01 04.000 +31 54 42.58 U F51
2020-07-25 07:02:58 C 16 01 03.951 +31 54 29.49 U F51
2020-07-25 07:21:25 C 16 01 03.901 +31 54 16.37 U F51
2020-07-25 07:39:56 C 16 01 03.854 +31 54 03.14 U F51
2020-08-10 04:18:35 C 16 04 11.23 +27 18 00.9 V G96
2020-08-10 04:26:04 C 16 04 11.39 +27 17 55.5 V G96
2020-08-10 04:33:33 C 16 04 11.52 +27 17 49.8 V G96
2020-08-10 04:41:01 C 16 04 11.59 +27 17 44.3 V G96
2020-08-15 06:08:41 C 16 06 34.112 +25 49 00.20 U F52
2020-08-15 06:27:32 C 16 06 34.508 +25 48 46.56 U F52
2020-08-15 06:46:17 C 16 06 34.896 +25 48 32.61 U F52
2020-08-15 07:05:03 C 16 06 35.289 +25 48 19.05 U F52
2020-08-22 06:05:06 C 16 10 48.680 +23 47 25.38 U F52
2020-08-22 06:40:40 C 16 10 49.652 +23 46 59.79 U F52
2020-08-22 06:58:28 C 16 10 50.138 +23 46 46.94 U F52
2020-09-07 03:14:55 C 16 24 01.42 +19 22 01.9 V G96
2020-09-07 03:23:04 C 16 24 01.75 +19 21 56.6 V G96
2020-09-07 03:31:11 C 16 24 02.06 +19 21 50.9 V G96
2020-09-07 03:39:19 C 16 24 02.37 +19 21 45.6 V G96
2022-01-06 12:47:11 C 15 01 37.34 -04 17 15.1 V 703
2022-01-06 12:55:19 C 15 01 38.14 -04 17 11.3 V 703
2022-01-06 13:03:26 C 15 01 39.01 -04 17 07.3 V 703
2022-01-13 12:32:57 C 15 17 34.31 -02 34 26.2 V 703
2022-01-13 12:40:42 C 15 17 35.01 -02 34 21.0 V 703
2022-01-13 12:48:25 C 15 17 35.79 -02 34 15.5 V 703
2022-01-13 12:56:09 C 15 17 36.41 -02 34 10.0 V 703
2022-01-21 12:04:47 C 15 34 40.48 -00 22 30.7 V 703
2022-01-21 12:12:09 C 15 34 41.22 -00 22 27.2 V 703
2022-01-21 12:26:55 C 15 34 42.57 -00 22 15.6 V 703
2022-01-25 12:05:03 C 15 42 46.93 +00 49 34.7 V 703
2022-01-25 12:20:16 C 15 42 48.32 +00 49 46.5 V 703
2022-01-25 12:27:52 C 15 42 48.88 +00 49 51.7 V 703