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
2024-05-28 06:34:50 C 14 20 33.544 +42 51 48.53 V G96
2024-05-29 08:41:21 C 14 19 42.379 +42 41 58.31 V T05
2024-05-29 08:46:34 C 14 19 42.134 +42 41 56.72 V T05
2024-05-29 08:54:24 C 14 19 41.885 +42 41 53.70 V T05
2024-05-29 09:13:38 C 14 19 41.345 +42 41 46.79 V T05
2024-06-02 08:41:42 C 14 16 59.122 +42 02 14.06 V T05
2024-06-02 08:46:16 C 14 16 59.054 +42 02 12.30 V T05
2024-06-02 08:55:23 C 14 16 58.790 +42 02 08.05 V T05
2024-06-02 09:10:25 C 14 16 58.344 +42 02 01.86 V T05
2024-06-09 05:16:22 C 14 13 50.221 +40 43 04.87 V V00
2024-06-09 05:24:26 C 14 13 50.099 +40 43 00.70 V V00
2024-06-09 05:59:42 C 14 13 49.559 +40 42 42.41 V V00
2024-06-09 18:50:13 C 14 13 39.589 +40 36 02.08 W M01
2024-06-09 21:04:33 C 14 13 37.606 +40 34 52.08 W M01
2024-06-09 23:04:26 C 14 13 36.117 +40 33 47.85 W M01
2024-06-11 06:32:54 C 14 13 15.288 +40 17 10.99 X F51
2024-06-11 06:49:45 C 14 13 15.086 +40 17 01.97 X F51
2024-06-11 07:06:40 C 14 13 14.877 +40 16 52.98 X F51
2024-06-11 07:23:38 C 14 13 14.667 +40 16 43.87 X F51
2024-06-12 04:39:21 C 14 13 02.485 +40 05 15.40 V G96
2024-06-12 04:46:51 C 14 13 02.410 +40 05 11.44 V G96
2024-06-12 04:54:23 C 14 13 02.327 +40 05 07.26 V G96
2024-06-12 05:01:55 C 14 13 02.251 +40 05 03.26 V G96
2024-06-16 08:07:02 C 14 12 28.185 +39 09 47.73 X F51
2024-06-16 08:24:35 C 14 12 28.110 +39 09 37.65 X F51
2024-06-16 08:42:09 C 14 12 28.032 +39 09 27.46 X F51
2024-06-25 09:15:44 C 14 13 12.326 +37 00 15.85 X F51
2024-06-25 09:32:43 C 14 13 12.460 +37 00 05.19 X F51
2024-06-25 09:48:33 C 14 13 12.584 +36 59 55.20 X F51
2024-06-25 10:04:21 C 14 13 12.730 +36 59 45.40 X F51
2025-05-26 13:18:38 C 22 31 13.472 +19 50 21.98 X F52
2025-05-26 13:36:02 C 22 31 14.403 +19 50 28.40 X F52
2025-05-26 13:53:28 C 22 31 15.325 +19 50 34.94 X F52
2025-05-26 14:10:47 C 22 31 16.256 +19 50 41.40 X F52
2025-06-09 10:52:15 C 22 48 37.058 +21 47 50.86 V G96
2025-06-09 10:56:19 C 22 48 37.249 +21 47 52.94 V G96
2025-06-09 11:00:24 C 22 48 37.444 +21 47 54.17 V G96
2025-06-09 11:04:28 C 22 48 37.688 +21 47 56.94 V G96
2025-06-16 10:45:08 C 22 56 47.555 +22 41 39.05 V G96
2025-06-16 10:51:19 C 22 56 47.843 +22 41 40.45 V G96
2025-06-16 10:57:30 C 22 56 48.156 +22 41 42.11 V G96
2025-06-16 11:03:42 C 22 56 48.401 +22 41 44.23 V G96
2025-06-29 13:44:27 C 23 10 49.721 +24 06 51.18 X F52
2025-06-29 14:08:26 C 23 10 50.659 +24 06 57.03 X F52
2025-06-29 14:20:33 C 23 10 51.141 +24 06 59.80 X F52
2025-07-01 04:26:03 C 23 12 24.857 +24 15 23.47 V R17
2025-07-01 04:35:15 C 23 12 25.260 +24 15 25.27 V R17
2025-07-01 04:44:26 C 23 12 25.598 +24 15 27.32 V R17
2025-07-01 04:54:52 C 23 12 26.011 +24 15 29.77 V R17
2025-07-01 12:52:39 C 23 12 45.461 +24 17 11.65 V T05