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
2025-12-11 08:29:11 C 08 24 57.942 +65 03 16.85 V 703
2025-12-11 08:30:20 C 08 24 57.596 +65 03 16.60 V 703
2025-12-11 08:32:37 C 08 24 57.150 +65 03 17.35 V 703
2025-12-11 08:33:46 C 08 24 56.747 +65 03 16.70 V 703
2025-12-11 08:36:03 C 08 24 56.214 +65 03 16.67 V 703
2025-12-11 08:37:12 C 08 24 55.879 +65 03 16.45 V 703
2025-12-11 08:39:29 C 08 24 55.372 +65 03 16.67 V 703
2025-12-11 08:40:38 C 08 24 54.918 +65 03 17.42 V 703
2025-12-11 12:09:48 C 08 24 03.233 +65 03 18.25 V T08
2025-12-11 12:23:54 C 08 23 59.666 +65 03 18.50 V T08
2025-12-11 12:27:51 C 08 23 58.634 +65 03 18.36 V T08
2025-12-11 12:35:06 C 08 23 56.724 +65 03 18.97 V T08
2025-12-13 11:02:53 C 08 12 21.272 +65 00 22.46 V 703
2025-12-13 11:06:19 C 08 12 20.264 +65 00 22.32 V 703
2025-12-13 11:09:44 C 08 12 19.397 +65 00 21.71 V 703
2025-12-13 11:13:10 C 08 12 18.436 +65 00 21.24 V 703
2025-12-13 11:55:55 C 08 12 08.803 +65 00 18.11 V T05
2025-12-13 12:16:26 C 08 12 03.511 +65 00 15.84 V T05
2025-12-13 12:21:00 C 08 12 02.323 +65 00 15.66 V T05
2025-12-14 11:25:09 C 08 06 15.156 +64 56 51.90 V T08
2025-12-14 11:27:47 C 08 06 14.506 +64 56 51.61 V T08
2025-12-14 11:42:28 C 08 06 10.663 +64 56 49.31 V T08
2025-12-14 11:47:10 C 08 06 09.492 +64 56 48.59 V T08
2025-12-16 07:59:59 C 07 55 03.950 +64 46 42.17 V 703
2025-12-16 08:03:25 C 07 55 02.982 +64 46 41.05 V 703
2025-12-16 08:06:51 C 07 55 02.176 +64 46 40.08 V 703
2025-12-16 08:10:16 C 07 55 01.211 +64 46 39.50 V 703
2025-12-20 06:16:06 C 07 31 53.713 +64 09 41.44 V 703
2025-12-20 06:19:33 C 07 31 52.878 +64 09 39.78 V 703
2025-12-20 06:22:59 C 07 31 52.043 +64 09 38.09 V 703
2025-12-20 06:26:26 C 07 31 51.208 +64 09 36.72 V 703
2025-12-22 06:16:46 C 07 20 36.107 +63 43 01.99 V 703
2025-12-22 06:20:13 C 07 20 35.297 +63 42 59.90 V 703
2025-12-22 06:23:40 C 07 20 34.530 +63 42 57.92 V 703
2025-12-22 06:27:06 C 07 20 33.698 +63 42 55.62 V 703
2025-12-22 11:51:50 C 07 19 18.254 +63 39 40.21 V T08
2025-12-22 11:56:26 C 07 19 17.170 +63 39 37.15 V T08
2025-12-22 12:03:52 C 07 19 15.403 +63 39 32.44 V T08
2025-12-22 22:59:31 B 07 16 46.975 +63 32 34.55 X R63
2025-12-22 23:23:54 B 07 16 41.258 +63 32 19.14 X R63
2025-12-25 10:46:30 C 07 03 40.126 +62 50 40.60 V T05
2025-12-25 11:06:44 C 07 03 35.698 +62 50 25.26 V T05
2025-12-25 11:12:00 C 07 03 34.550 +62 50 21.34 V T05
2025-12-25 11:21:30 C 07 03 32.441 +62 50 14.24 V T05
2025-12-25 11:25:29 C 07 03 31.637 +62 50 10.93 V T05
2025-12-25 11:49:25 C 07 03 26.407 +62 49 52.79 V T05
2025-12-25 11:50:04 C 07 03 26.263 +62 49 52.39 V T05
2025-12-25 11:59:56 C 07 03 24.108 +62 49 44.72 V T05
2025-12-26 10:04:20 C 06 58 49.354 +62 32 30.73 V T08
2025-12-26 10:06:18 C 06 58 48.881 +62 32 29.40 V T08