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
2018-02-07 03:45:08 C 06 59 46.90 +40 46 44.4 U I41
2018-02-07 04:10:06 C 06 59 45.56 +40 46 31.2 U I41
2018-02-07 05:12:59 C 06 59 42.31 +40 45 57.4 U I41
2018-02-07 05:47:13 C 06 59 40.55 +40 45 38.4 U I41
2018-02-08 04:31:30 C 06 58 34.50 +40 33 14.5 U G96
2018-02-08 04:41:06 C 06 58 34.05 +40 33 09.9 U G96
2018-02-08 04:50:51 C 06 58 33.55 +40 33 04.5 U G96
2018-02-08 05:00:37 C 06 58 33.09 +40 32 59.1 U G96
2018-02-09 03:45:12 C 06 57 30.57 +40 20 34.9 U I41
2018-02-09 04:10:05 C 06 57 29.38 +40 20 21.5 U I41
2018-02-09 04:44:30 C 06 57 27.78 +40 20 02.9 U I41
2018-02-09 05:25:03 C 06 57 25.90 +40 19 41.1 U I41
2018-03-10 04:35:48 C 06 48 02.54 +34 36 11.5 U G96
2018-03-10 04:42:39 C 06 48 02.64 +34 36 08.4 U G96
2018-03-10 04:49:28 C 06 48 02.71 +34 36 05.8 U G96
2018-03-10 04:56:19 C 06 48 02.78 +34 36 02.2 U G96
2019-01-08 14:59:45 C 11 25 33.379 -03 08 34.34 U F51
2019-01-08 15:14:49 C 11 25 33.183 -03 08 36.68 U F51
2019-01-08 15:29:51 C 11 25 33.001 -03 08 39.10 U F51
2019-01-08 15:44:53 C 11 25 32.807 -03 08 41.34 U F51
2019-01-16 14:49:41 C 11 22 32.795 -03 34 01.65 U F52
2019-01-16 15:06:31 C 11 22 32.420 -03 34 03.20 U F52
2019-01-16 15:23:13 C 11 22 32.080 -03 34 05.39 U F52
2019-01-16 15:39:57 C 11 22 31.729 -03 34 07.11 U F52
2019-02-28 07:24:28 C 10 41 39.76 -03 16 22.5 V G96
2019-02-28 07:32:30 C 10 41 39.31 -03 16 21.7 V G96
2019-02-28 07:40:32 C 10 41 38.90 -03 16 20.2 V G96
2019-02-28 07:48:33 C 10 41 38.44 -03 16 18.9 V G96
2019-04-02 07:52:28 C 10 03 52.633 -00 55 09.19 U F51
2019-04-02 08:09:21 C 10 03 52.005 -00 55 06.31 U F51
2019-04-02 08:26:10 C 10 03 51.398 -00 55 03.22 U F51
2019-04-02 08:42:57 C 10 03 50.773 -00 55 00.36 U F51
2019-04-06 05:08:55 C 10 00 44.82 -00 39 19.2 V G96
2019-04-06 05:17:02 C 10 00 44.54 -00 39 17.9 V G96
2019-04-06 05:25:09 C 10 00 44.23 -00 39 15.6 V G96
2019-04-06 05:33:15 C 10 00 44.04 -00 39 15.2 V G96
2019-04-07 05:59:50 C 09 59 58.60 -00 35 15.6 V G96
2019-04-07 06:07:53 C 09 59 58.36 -00 35 14.2 V G96
2019-04-07 06:15:57 C 09 59 58.12 -00 35 13.1 V G96
2020-10-21 11:42:13 C 09 49 15.50 +23 58 46.4 V G96
2020-10-21 11:50:18 C 09 49 15.78 +23 58 44.3 V G96
2020-10-21 11:58:24 C 09 49 16.07 +23 58 42.2 V G96
2020-10-21 12:06:29 C 09 49 16.41 +23 58 40.5 V G96
2020-10-23 14:45:04 C 09 51 20.405 +23 47 23.22 U F51
2020-10-23 14:52:30 C 09 51 20.701 +23 47 21.56 U F51
2020-10-23 14:59:56 C 09 51 20.993 +23 47 20.07 U F51
2020-10-23 15:07:22 C 09 51 21.280 +23 47 18.37 U F51
2020-11-25 14:21:33 C 10 10 58.199 +21 53 57.31 U F51
2020-11-25 14:36:55 C 10 10 58.297 +21 53 56.40 U F51
2020-11-25 14:52:27 C 10 10 58.391 +21 53 55.66 U F51