137078 (1998 XZ4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6379071136 ± 7.58e-09
Semi-major axis (a)1.9385185544 AU ± 1.50e-09
Inclination (i)23.14653620° ± 3.85e-07
Long. of Asc. Node (Ω)324.43101836° ± 3.94e-06
Arg. of Perihelion (ω)9.64010941° ± 4.32e-06
Mean Anomaly (M)29.30107170° ± 2.11e-06
Mean Motion (n)0.3651802931°/day ± 4.24e-10
Perihelion dist (q)0.70192378 AU ± 1.47e-08
Aphelion dist (Q)3.17511333 AU ± 1.49e-08
Orbital Period2.69901279 yr ± 3.14e-09
Physical Parameters
H (abs. magnitude)16.36
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.018″
Uncertainty0
Orbit TypeApollo
MOID0.300990 AU
Observations Used845
Gaia Obs Used132
Oppositions12
Arc Total1998-2017
First Observation Used1998-12-11
Last Observation Used2026-01-08
Observations (933)
Date Type RA Dec Mag Band Observatory
2021-03-18 04:22:06 C 08 20 43.79 +23 05 31.6 V G96
2021-03-18 04:30:08 C 08 20 43.61 +23 05 30.6 V G96
2021-03-18 04:38:12 C 08 20 43.46 +23 05 29.1 V G96
2022-01-28 13:44:16 C 12 06 41.200 -15 32 18.09 U F52
2022-01-28 14:02:51 C 12 06 40.844 -15 32 22.87 U F52
2022-01-28 14:21:24 C 12 06 40.497 -15 32 27.61 U F52
2022-01-28 14:39:52 C 12 06 40.146 -15 32 32.39 U F52
2022-02-04 12:43:35 C 12 03 01.480 -16 12 44.75 U F52
2022-02-04 13:02:32 C 12 03 00.960 -16 12 49.03 U F52
2022-02-04 13:21:29 C 12 03 00.436 -16 12 53.28 U F52
2022-02-10 09:40:55 C 11 58 48.40 -16 41 21.2 V G96
2022-02-10 09:48:22 C 11 58 48.16 -16 41 22.5 V G96
2022-02-10 09:55:48 C 11 58 47.91 -16 41 24.1 V G96
2022-02-10 10:03:15 C 11 58 47.64 -16 41 25.7 V G96
2022-03-09 06:55:44 C 11 27 26.28 -17 22 33.4 V G96
2022-03-09 07:03:51 C 11 27 25.78 -17 22 33.0 V G96
2022-03-09 07:11:58 C 11 27 25.28 -17 22 31.9 V G96
2022-03-09 07:20:07 C 11 27 24.75 -17 22 31.4 V G96
2022-03-11 09:38:29 C 11 24 21.317 -17 18 21.36 U F52
2022-03-11 09:54:13 C 11 24 20.344 -17 18 19.99 U F52
2022-03-11 10:09:58 C 11 24 19.354 -17 18 18.53 U F52
2022-04-06 03:46:40 C 10 47 20.936 -15 10 37.85 V G96
2022-04-06 03:54:49 C 10 47 20.458 -15 10 35.76 V G96
2022-04-06 04:02:57 C 10 47 20.022 -15 10 33.35 V G96
2022-04-06 04:11:04 C 10 47 19.601 -15 10 31.55 V G96
2022-05-04 04:22:05 C 10 23 44.912 -11 59 43.66 V G96
2022-05-04 04:30:19 C 10 23 44.754 -11 59 42.22 V G96
2022-05-04 04:38:33 C 10 23 44.621 -11 59 39.70 V G96
2022-05-04 04:46:46 C 10 23 44.459 -11 59 37.97 V G96
2022-05-31 03:41:38 C 10 24 18.281 -10 20 23.46 V G96
2022-05-31 03:49:13 C 10 24 18.457 -10 20 23.53 V G96
2022-05-31 03:56:48 C 10 24 18.551 -10 20 22.52 V G96
2022-05-31 04:04:23 C 10 24 18.630 -10 20 22.63 V G96
2023-02-19 10:51:08 C 00 42 07.40 +23 48 49.9 V D29
2023-02-19 11:10:14 C 00 42 11.19 +23 49 13.8 V D29
2023-02-19 11:29:19 C 00 42 14.91 +23 49 35.6 V D29
2023-03-13 03:02:01 C 02 18 04.558 +31 27 31.97 V V00
2023-03-13 03:09:21 C 02 18 05.832 +31 27 36.18 V V00
2023-03-13 03:16:39 C 02 18 07.106 +31 27 40.32 V V00
2023-03-13 03:23:57 C 02 18 08.374 +31 27 44.60 V V00
2023-04-01 02:44:41 C 03 32 48.206 +34 25 43.57 V G96
2023-04-01 02:50:54 C 03 32 49.182 +34 25 45.41 V G96
2023-04-01 02:57:07 C 03 32 50.107 +34 25 46.85 V G96
2023-04-01 03:03:21 C 03 32 51.040 +34 25 48.58 V G96
2024-01-21 09:58:56 C 10 23 54.539 +10 24 06.90 X F51
2024-01-21 10:15:40 C 10 23 53.808 +10 24 08.38 X F51
2024-01-21 10:32:22 C 10 23 53.089 +10 24 09.89 X F51
2024-01-21 10:49:07 C 10 23 52.383 +10 24 11.28 X F51
2024-02-04 13:43:12 C 10 07 37.619 +10 59 51.60 X F52
2024-02-04 13:58:05 C 10 07 36.816 +10 59 53.30 X F52