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
1999-05-14 05:53:10 C 14 35 29.05 +19 59 05.6 19.4 a 704
1999-05-14 06:14:50 C 14 35 29.85 +19 59 37.0 19.4 a 704
1999-05-14 06:36:40 C 14 35 30.68 +20 00 08.4 19.4 a 704
1999-05-20 01:13:36 C 14 42 44.81 +23 14 02.4 c 118
1999-05-20 01:23:19 C 14 42 45.30 +23 14 13.5 c 118
1999-05-23 22:00:38 C 14 48 55.16 +25 15 34.3 c 118
1999-05-23 22:14:08 C 14 48 56.03 +25 15 51.8 c 118
1999-06-04 08:46:07 C 15 14 41.47 +30 18 16.7 18.4 a 704
1999-06-04 08:57:55 C 15 14 42.79 +30 18 25.7 19.2 a 704
1999-06-04 09:09:12 C 15 14 43.96 +30 18 36.2 19.0 a 704
1999-06-04 09:31:49 C 15 14 46.48 +30 18 55.2 18.9 a 704
1999-06-07 04:14:58 C 15 23 02.31 +31 15 55.7 18.2 a 704
1999-06-07 04:29:50 C 15 23 04.00 +31 16 07.8 18.8 a 704
1999-06-07 04:43:53 C 15 23 05.70 +31 16 18.8 18.7 a 704
1999-06-07 04:57:57 C 15 23 07.36 +31 16 29.7 19.2 a 704
1999-06-07 05:12:00 C 15 23 09.06 +31 16 41.9 19.3 a 704
1999-06-08 03:50:05 C 15 26 08.46 +31 34 10.7 18.6 a 704
1999-06-08 04:04:58 C 15 26 10.28 +31 34 21.4 18.9 a 704
1999-06-08 04:19:22 C 15 26 12.07 +31 34 32.1 18.6 a 704
1999-06-08 04:33:45 C 15 26 13.78 +31 34 43.3 18.8 a 704
1999-06-08 04:48:09 C 15 26 15.55 +31 34 54.0 18.4 a 704
1999-06-10 05:45:19 C 15 33 01.17 +32 09 16.7 19.6 a 704
1999-06-10 06:06:14 C 15 33 03.84 +32 09 29.8 19.5 a 704
1999-06-10 06:27:04 C 15 33 06.52 +32 09 43.4 19.5 a 704
1999-06-10 06:48:01 C 15 33 09.33 +32 09 55.6 19.7 a 704
1999-06-10 07:08:51 C 15 33 12.06 +32 10 08.7 19.2 a 704
1999-06-11 04:07:20 C 15 36 16.81 +32 23 22.4 19.1 a 704
1999-06-11 04:25:50 C 15 36 19.32 +32 23 34.3 19.3 a 704
1999-06-11 04:44:19 C 15 36 21.80 +32 23 45.5 19.2 a 704
1999-06-11 05:03:02 C 15 36 24.34 +32 23 57.2 19.5 a 704
1999-06-11 05:21:33 C 15 36 26.82 +32 24 08.5 19.2 a 704
1999-07-02 21:56:02 C 17 15 34.62 +31 40 30.1 d 046
1999-07-02 21:58:40 C 17 15 35.14 +31 40 27.5 d 046
1999-07-02 22:00:46 C 17 15 35.59 +31 40 26.1 d 046
1999-07-02 22:03:12 C 17 15 36.08 +31 40 23.3 d 046
1999-07-02 23:41:43 C 17 15 56.89 +31 38 57.5 z 587
1999-07-02 23:47:38 C 17 15 58.05 +31 38 51.3 z 587
1999-07-03 22:48:54 C 17 21 01.42 +31 17 18.7 d 046
1999-07-03 22:50:24 C 17 21 01.79 +31 17 17.5 d 046
1999-07-03 22:51:55 C 17 21 02.09 +31 17 16.0 d 046
1999-07-03 22:53:55 C 17 21 02.50 +31 17 13.8 d 046
1999-07-09 12:14:48 C 17 50 13.93 +28 38 01.1 z 402
1999-07-09 12:16:37 C 17 50 14.25 +28 37 57.7 z 402
1999-07-09 12:18:25 C 17 50 14.62 +28 37 55.5 z 402
1999-07-14 22:15:42 C 18 17 40.50 +25 10 08.2 z 587
1999-07-14 22:20:49 C 18 17 41.53 +25 09 59.6 z 587
1999-07-16 00:11:38 C 18 22 56.03 +24 23 25.8 c 118
1999-07-16 00:20:32 C 18 22 57.74 +24 23 08.7 c 118
1999-07-22 04:12:23 C 18 51 27.16 +19 33 29.2 17.9 a 704
1999-07-22 04:30:37 C 18 51 30.19 +19 32 51.1 18.6 a 704