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
1999-07-22 04:48:54 C 18 51 33.43 +19 32 16.6 18.4 a 704
1999-07-22 05:07:06 C 18 51 36.53 +19 31 37.3 18.1 a 704
1999-08-03 14:03:03 C 19 38 46.44 +09 11 25.0 413
1999-08-03 14:05:16 C 19 38 46.75 +09 11 20.0 413
1999-08-04 17:01:01 C 19 42 22.85 +08 17 20.8 413
1999-08-04 17:03:30 C 19 42 23.17 +08 17 15.5 413
1999-08-06 06:11:10 C 19 47 14.70 +07 03 45.9 z 711
1999-08-06 06:17:40 C 19 47 15.53 +07 03 29.6 z 711
1999-08-08 06:28:24 C 19 53 15.02 +05 31 37.1 z 711
1999-08-08 06:34:38 C 19 53 15.81 +05 31 21.9 z 711
2003-07-30 06:26:26 C 13 22 25.283 +02 33 27.88 o 568
2003-07-30 06:30:50 C 13 22 25.907 +02 33 24.11 o 568
2003-07-31 07:40:18 C 13 26 02.664 +02 12 05.86 o 568