1999 HX1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5585461409 ± 7.44e-08
Semi-major axis (a)2.5751766432 AU ± 1.68e-07
Inclination (i)8.28851947° ± 6.28e-06
Long. of Asc. Node (Ω)165.79859341° ± 6.99e-05
Arg. of Perihelion (ω)105.23831885° ± 9.54e-05
Mean Anomaly (M)150.81025413° ± 2.42e-04
Mean Motion (n)0.2385073347°/day ± 2.33e-08
Perihelion dist (q)1.13682167 AU ± 2.05e-07
Aphelion dist (Q)4.01353162 AU ± 3.24e-07
Orbital Period4.13247787 yr ± 4.04e-07
Physical Parameters
H (abs. magnitude)19.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.585″
Uncertainty0
Orbit TypeAmor
MOID0.188349 AU
Observations Used112
Oppositions3
Arc Total1999-2003
First Observation Used1999-04-19
Last Observation Used2003-07-31
Observations (113)
Date Type RA Dec Mag Band Observatory
1999-04-19 07:16:55 C 14 18 58.25 +05 44 38.4 19.3 a 704
1999-04-19 07:40:38 C 14 18 58.58 +05 45 09.9 19.3 a 704
1999-04-19 08:04:32 C 14 18 59.07 +05 45 41.4 20.1 a 704
1999-04-19 08:28:24 C 14 18 59.49 +05 46 10.1 19.8 a 704
1999-04-20 21:30:36 C 14 19 42.61 +06 33 50.5 557
1999-04-20 21:33:58 C 14 19 42.69 +06 33 55.4 557
1999-04-20 21:37:18 C 14 19 42.75 +06 33 59.4 557
1999-04-20 23:06:31 C 14 19 43.98 +06 35 56.8 d 046
1999-04-20 23:20:22 C 14 19 44.22 +06 36 15.1 d 046
1999-04-20 23:22:55 C 14 19 44.28 +06 36 17.8 d 046
1999-04-22 01:01:39 C 14 20 14.96 +07 10 31.2 z 859
1999-04-22 01:09:52 C 14 20 15.07 +07 10 42.5 z 859
1999-04-22 01:28:25 C 14 20 15.34 +07 11 07.3 z 859
1999-04-22 08:48:39 C 14 20 23.09 +07 20 26.9 658
1999-04-22 08:52:33 C 14 20 23.14 +07 20 32.1 658
1999-04-22 08:56:47 C 14 20 23.21 +07 20 37.9 658
1999-04-22 12:28:35 C 14 20 28.49 +07 25 50.8 426
1999-04-22 12:34:09 C 14 20 28.52 +07 25 58.5 426
1999-04-22 12:42:39 C 14 20 28.67 +07 26 10.0 426
1999-04-23 00:54:59 C 14 20 41.76 +07 42 02.2 557
1999-04-23 00:57:50 C 14 20 41.81 +07 42 05.7 557
1999-04-23 01:00:41 C 14 20 41.85 +07 42 09.0 557
1999-04-23 02:00:02 C 14 20 42.80 +07 43 29.5 d 046
1999-04-23 02:04:20 C 14 20 42.86 +07 43 35.1 d 046
1999-04-23 02:06:35 C 14 20 42.95 +07 43 38.3 d 046
1999-04-23 02:08:52 C 14 20 42.97 +07 43 40.6 d 046
1999-04-23 06:31:12 C 14 20 49.35 +07 49 35.7 658
1999-04-23 06:36:25 C 14 20 49.48 +07 49 43.3 658
1999-04-23 06:40:26 C 14 20 49.53 +07 49 48.6 658
1999-04-23 13:54:52 C 14 20 58.15 +08 00 08.5 426
1999-04-23 14:00:16 C 14 20 58.24 +08 00 16.0 426
1999-04-23 14:06:35 C 14 20 58.29 +08 00 24.5 426
1999-04-23 20:31:50 C 14 21 06.35 +08 08 33.3 557
1999-04-23 20:43:15 C 14 21 06.54 +08 08 49.7 557
1999-04-23 20:46:06 C 14 21 06.60 +08 08 54.2 557
1999-04-23 23:25:48 C 14 21 09.14 +08 12 33.0 d 046
1999-04-23 23:27:57 C 14 21 09.08 +08 12 36.1 d 046
1999-04-23 23:30:10 C 14 21 09.14 +08 12 38.8 d 046
1999-04-23 23:32:20 C 14 21 09.17 +08 12 42.1 d 046
1999-04-23 23:34:31 C 14 21 09.23 +08 12 45.4 d 046
1999-04-24 06:44:57 C 14 21 18.45 +08 22 32.8 658
1999-04-24 06:54:49 C 14 21 18.62 +08 22 46.3 658
1999-04-24 06:57:12 C 14 21 18.63 +08 22 49.7 658
1999-05-05 05:15:00 C 14 27 36.22 +14 39 53.5 658
1999-05-05 05:18:14 C 14 27 36.29 +14 39 58.0 658
1999-05-05 05:21:21 C 14 27 36.37 +14 40 03.4 658
1999-05-12 15:26:45 C 14 33 48.47 +19 03 18.1 360
1999-05-12 15:33:14 C 14 33 48.71 +19 03 27.4 360
1999-05-12 15:38:45 C 14 33 48.87 +19 03 35.1 360
1999-05-14 05:31:28 C 14 35 28.24 +19 58 34.2 19.1 a 704