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
2023-08-17 02:54:33 C 03 17 04.411 +06 37 03.50 V M22
2023-08-17 03:03:13 C 03 17 06.096 +06 36 49.79 V M22
2023-08-27 07:46:18 C 04 09 55.123 -01 10 05.23 V W68
2023-08-27 07:53:32 C 04 09 56.806 -01 10 20.93 V W68
2023-08-27 08:15:32 C 04 10 01.891 -01 11 10.07 V W68
2023-08-29 02:05:26 C 04 19 59.414 -02 45 41.11 V M22
2023-08-29 02:10:03 C 04 20 00.533 -02 45 51.66 V M22
2023-08-29 02:17:56 C 04 20 02.395 -02 46 09.84 V M22
2023-08-29 02:34:22 C 04 20 06.300 -02 46 47.96 V M22
2023-08-30 07:36:48 C 04 27 10.728 -03 54 32.87 V W68
2023-08-30 07:51:50 C 04 27 14.431 -03 55 07.28 V W68
2023-08-30 08:16:53 C 04 27 20.496 -03 56 06.50 V W68
2023-08-30 08:18:50 C 04 27 20.962 -03 56 11.04 V W68
2023-09-04 14:18:19 S 04 59 24.13 -09 05 09.7 L C51
2023-09-04 17:24:59 S 05 00 13.22 -09 12 59.9 L C51
2023-09-04 20:31:39 S 05 01 02.38 -09 20 50.2 L C51
2023-09-04 23:38:08 S 05 01 51.55 -09 28 40.8 L C51
2023-09-05 01:11:28 S 05 02 16.20 -09 32 36.0 L C51
2023-09-05 02:44:48 S 05 02 40.85 -09 36 32.2 L C51
2023-09-05 04:18:08 S 05 03 05.50 -09 40 27.6 L C51
2023-09-05 05:51:28 S 05 03 30.23 -09 44 23.5 L C51
2023-09-05 07:24:48 S 05 03 54.90 -09 48 19.0 L C51
2023-09-05 12:04:37 S 05 05 09.07 -10 00 06.2 L C51
2023-09-05 13:37:57 S 05 05 33.82 -10 04 02.5 L C51
2023-09-05 15:11:17 S 05 05 58.66 -10 07 59.4 L C51
2023-09-05 16:44:37 S 05 06 23.42 -10 11 54.3 L C51
2023-09-06 02:04:26 S 05 08 52.52 -10 35 32.1 L C51
2023-09-06 05:10:55 S 05 09 42.33 -10 43 24.7 L C51
2023-09-06 05:11:06 S 05 09 42.37 -10 43 24.8 L C51
2023-09-06 08:17:35 S 05 10 32.23 -10 51 17.7 L C51
2023-09-13 03:31:22 C 05 55 21.569 -17 38 28.93 V M22
2023-09-13 03:33:58 C 05 55 22.289 -17 38 35.09 V M22
2023-09-13 03:38:03 C 05 55 23.438 -17 38 45.24 V M22
2023-09-13 03:40:41 C 05 55 24.139 -17 38 51.32 V M22
2023-09-13 23:54:36 C 06 01 04.822 -18 27 05.58 V M22
2023-09-14 00:00:43 C 06 01 06.403 -18 27 20.16 V M22
2023-09-14 00:08:25 C 06 01 08.563 -18 27 38.02 V M22
2023-09-14 00:26:24 C 06 01 13.625 -18 28 21.07 V M22
2023-09-21 08:16:29 C 06 50 35.033 -24 47 33.00 V W68
2023-09-21 08:47:35 C 06 50 43.589 -24 48 32.76 V W68
2023-09-21 08:50:52 C 06 50 44.520 -24 48 38.74 V W68
2023-09-21 08:51:31 C 06 50 44.688 -24 48 40.57 V W68
2023-09-22 17:11:26 C 06 59 43.67 -25 48 47.4 V Q62
2023-09-22 17:24:10 C 06 59 47.18 -25 49 10.5 V Q62
2023-09-22 17:37:36 C 06 59 50.87 -25 49 35.0 V Q62
2023-09-23 02:15:40 C 07 02 14.088 -26 05 04.42 V M22
2023-09-23 02:26:33 C 07 02 17.071 -26 05 23.75 V M22
2023-09-23 02:35:05 C 07 02 19.390 -26 05 39.16 V M22
2023-09-27 08:48:21 C 07 30 09.480 -28 50 49.16 V W68
2023-09-27 08:52:30 C 07 30 10.610 -28 50 55.32 V W68