IAA RAS IAA Minor Planet Database

1999 GL4

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6026148541 ± 1.14e-04
Semi-major axis (a)2.1196811123 AU ± 3.93e-04
Inclination (i)7.26273628° ± 6.63e-04
Long. of Asc. Node (Ω)178.35925908° ± 3.94e-04
Arg. of Perihelion (ω)293.92349324° ± 7.37e-04
Mean Anomaly (M)251.73574409° ± 9.15e-01
Mean Motion (n)0.3193790915°/day ± 8.89e-05
Perihelion dist (q)0.84232979 AU ± 2.88e-04
Aphelion dist (Q)3.39703244 AU ± 6.75e-04
Orbital Period3.08607016 yr ± 8.59e-04
Physical Parameters
H (abs. magnitude)19.88
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.705″
Uncertainty3
Orbit TypeApollo
MOID0.026337 AU
Observations Used48
Oppositions1
Arc Total1998-1999
First Observation Used1998-09-25
Last Observation Used1999-05-22
Observations (48)
Date Type RA Dec Mag Band Observatory
1998-09-25 06:58:16 C 00 12 58.306 +00 09 49.35 – e 645
1998-09-25 07:03:16 C 00 12 57.988 +00 09 45.70 21.27 e 645
1999-04-12 07:17:24 C 13 45 29.33 +01 06 17.0 18.7 a 704
1999-04-12 07:42:11 C 13 45 27.72 +01 06 30.8 19.4 a 704
1999-04-12 08:06:51 C 13 45 25.93 +01 06 47.0 19.0 a 704
1999-04-12 08:31:32 C 13 45 24.24 +01 07 01.3 19.6 a 704
1999-04-13 00:25:56 C 13 44 24.88 +01 16 01.7 – – 557
1999-04-13 00:29:17 C 13 44 24.67 +01 16 03.1 – – 557
1999-04-13 00:32:37 C 13 44 24.42 +01 16 05.6 – – 557
1999-04-13 12:14:19 C 13 43 43.08 +01 23 01.5 – – 426
1999-04-13 12:24:39 C 13 43 42.41 +01 23 08.0 – – 426
1999-04-13 12:34:54 C 13 43 41.75 +01 23 12.1 – – 426
1999-04-13 12:58:20 C 13 43 39.90 +01 23 24.6 – – 422
1999-04-13 12:59:47 C 13 43 39.82 +01 23 25.8 – – 422
1999-04-13 13:00:57 C 13 43 39.76 +01 23 25.7 – – 422
1999-04-13 13:03:38 C 13 43 39.57 +01 23 26.7 – – 422
1999-04-13 21:50:49 C 13 43 08.17 +01 27 37.9 – z 587
1999-04-13 22:15:19 C 13 43 06.60 +01 27 50.1 – z 587
1999-04-13 23:39:29 C 13 43 01.15 +01 28 33.9 – – 557
1999-04-13 23:42:20 C 13 43 00.98 +01 28 35.4 – – 557
1999-04-13 23:45:11 C 13 43 00.80 +01 28 37.1 – – 557
1999-04-14 20:10:20 C 13 41 50.70 +01 38 57.5 – d 046
1999-04-14 20:13:52 C 13 41 50.46 +01 38 59.4 – d 046
1999-04-14 20:17:15 C 13 41 50.29 +01 39 00.3 – d 046
1999-04-14 20:20:19 C 13 41 50.10 +01 39 01.5 – d 046
1999-04-14 20:23:46 C 13 41 49.86 +01 39 02.6 – d 046
1999-04-14 20:26:24 C 13 41 49.77 +01 39 03.8 – d 046
1999-04-15 01:24:55 C 13 41 31.52 +01 41 28.7 – b 118
1999-04-15 01:30:30 C 13 41 31.20 +01 41 31.7 – b 118
1999-04-15 01:35:25 C 13 41 30.92 +01 41 33.6 – b 118
1999-04-15 12:33:54 C 13 40 55.27 +01 47 14.4 – – 422
1999-04-15 12:35:16 C 13 40 55.22 +01 47 15.0 – – 422
1999-04-15 12:41:34 C 13 40 54.81 +01 47 17.7 – – 422
1999-04-16 12:59:42 C 13 39 35.99 +01 58 09.1 – – 422
1999-04-16 13:00:47 C 13 39 35.94 +01 58 09.2 – – 422
1999-04-16 13:01:51 C 13 39 35.84 +01 58 10.3 – – 422
1999-04-19 05:27:49 C 13 36 24.48 +02 22 35.3 19.6 a 704
1999-04-19 06:14:52 C 13 36 22.08 +02 22 49.0 19.5 a 704
1999-04-19 06:38:22 C 13 36 20.66 +02 22 57.9 19.5 a 704
1999-04-19 07:01:56 C 13 36 19.48 +02 23 06.9 19.3 a 704
1999-04-22 09:48:43 C 13 33 08.05 +02 44 57.1 – – 658
1999-04-22 09:58:12 C 13 33 07.69 +02 44 59.9 – – 658
1999-04-22 10:05:34 C 13 33 07.34 +02 45 01.1 – – 658
1999-05-22 05:12:06 C 13 24 43.23 +02 23 28.2 – i 693
1999-05-22 05:23:05 C 13 24 43.44 +02 23 23.6 – – 658
1999-05-22 05:31:13 C 13 24 43.36 +02 23 23.2 – i 693
1999-05-22 05:45:31 C 13 24 43.64 +02 23 20.3 – – 658
1999-05-22 06:06:22 C 13 24 43.83 +02 23 14.7 – – 658