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
2025-12-26 10:10:15 C 06 58 48.072 +62 32 26.27 V T08
2025-12-26 10:30:51 C 06 58 43.704 +62 32 10.18 V T08
2025-12-27 02:43:47 B 06 55 25.956 +62 18 52.09 q Y84
2025-12-27 02:51:31 B 06 55 24.386 +62 18 45.68 q Y84
2025-12-27 03:01:11 B 06 55 22.402 +62 18 37.44 q Y84
2025-12-28 00:52:50 B 06 51 04.742 +62 00 09.32 q Y84
2025-12-28 01:00:33 B 06 51 03.221 +62 00 02.70 q Y84
2025-12-28 01:08:17 B 06 51 01.682 +61 59 56.08 q Y84
2025-12-28 09:38:30 C 06 49 24.295 +61 52 36.73 V T08
2025-12-28 09:42:27 C 06 49 23.376 +61 52 33.64 V T08
2025-12-28 09:49:41 C 06 49 21.919 +61 52 27.52 V T08
2025-12-28 10:04:11 C 06 49 19.087 +61 52 14.74 V T08
2025-12-28 20:12:26 C 06 47 24.530 +61 43 10.70 X M26
2025-12-28 20:20:50 C 06 47 22.898 +61 43 03.25 X M26
2025-12-28 20:28:35 C 06 47 21.492 +61 42 56.84 X M26
2025-12-29 04:09:03 C 06 45 55.850 +61 36 05.04 V 703
2025-12-29 04:12:03 C 06 45 55.217 +61 36 01.76 V 703
2025-12-29 04:15:03 C 06 45 54.630 +61 35 58.99 V 703
2025-12-29 04:18:03 C 06 45 54.094 +61 35 56.76 V 703
2025-12-30 23:16:42 B 06 38 12.362 +60 55 56.64 q Y84
2025-12-30 23:24:24 B 06 38 11.006 +60 55 49.22 q Y84
2025-12-30 23:35:12 B 06 38 09.110 +60 55 38.89 q Y84
2026-01-01 09:21:04 C 06 32 31.205 +60 22 44.36 V T08
2026-01-01 09:23:02 C 06 32 30.859 +60 22 42.42 V T08
2026-01-01 09:28:18 C 06 32 30.034 +60 22 37.70 V T08
2026-01-01 09:38:17 C 06 32 28.457 +60 22 27.23 V T08
2026-01-06 16:06:24 C 06 14 25.86 +58 10 05.9 V D29
2026-01-06 16:07:41 C 06 14 25.69 +58 10 04.7 V D29
2026-01-06 16:26:46 C 06 14 23.22 +58 09 43.6 V D29
2026-01-06 16:28:02 C 06 14 23.08 +58 09 42.3 V D29
2026-01-08 11:33:26 C 06 09 17.446 +57 22 33.12 X F51
2026-01-08 11:51:22 C 06 09 15.363 +57 22 13.03 X F51
2026-01-08 12:09:05 C 06 09 13.305 +57 21 53.10 X F51