523815 (2009 HW44)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5921917799 ± 8.83e-08
Semi-major axis (a)2.6852148159 AU ± 8.18e-08
Inclination (i)41.10511559° ± 2.85e-05
Long. of Asc. Node (Ω)37.82675349° ± 9.13e-06
Arg. of Perihelion (ω)296.58720972° ± 2.90e-05
Mean Anomaly (M)229.77083331° ± 2.42e-05
Mean Motion (n)0.2239977851°/day ± 1.02e-08
Perihelion dist (q)1.09505267 AU ± 2.39e-07
Aphelion dist (Q)4.27537696 AU ± 2.70e-07
Orbital Period4.40016085 yr ± 2.01e-07
Physical Parameters
H (abs. magnitude)17.56
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual1.178″
Uncertainty0
Orbit TypeAmor
MOID0.316309 AU
Observations Used648
Oppositions10
Arc Total2009-2022
First Observation Used2009-04-22
Last Observation Used2022-05-21
Observations (1189)
Date Type RA Dec Mag Band Observatory
2018-10-02 05:14:40 s 1 -206235.96 9 +72368.266 0.01 C57
2018-10-02 07:14:40 S 04 54 17.570 -60 06 44.21 V C57
2018-10-02 07:14:40 s 1 -203558.58 0 +63299.904 0.991 C57
2018-10-02 12:32:30 C 04 53 52.02 -60 03 30.6 V 474
2018-10-02 12:38:16 C 04 53 49.91 -60 03 24.5 V 474
2018-10-02 12:44:02 C 04 53 47.78 -60 03 18.4 V 474
2018-10-05 05:14:40 S 04 30 24.298 -58 40 34.57 V C57
2018-10-05 05:14:40 s 1 +121948.46 7 -46209.762 3870.0 C57
2018-10-05 06:14:40 S 04 30 01.037 -58 39 25.31 V C57
2018-10-05 06:14:40 s 1 +125404.32 3 -40635.286 5760.0 C57
2018-10-05 06:44:40 S 04 29 49.462 -58 38 50.42 V C57
2018-10-05 06:44:40 s 1 +127054.75 5 -37822.221 2050.0 C57
2018-10-05 08:44:40 S 04 29 02.614 -58 36 25.81 V C57
2018-10-05 08:44:40 s 1 +133154.87 8 -26433.168 8420.0 C57
2018-10-05 09:14:40 S 04 28 50.318 -58 36 05.04 V C57
2018-10-05 09:14:40 s 1 +134557.93 2 -23558.697 4220.0 C57
2018-10-05 09:44:40 S 04 28 40.586 -58 35 22.34 V C57
2018-10-05 09:44:40 s 1 +135913.61 7 -20675.938 7850.0 C57
2018-10-05 13:14:40 S 04 27 18.905 -58 31 05.34 V C57
2018-10-05 13:14:40 s 1 +144139.07 6 - 358.886 390.0 C57
2018-10-05 15:44:40 S 04 26 20.796 -58 27 59.76 V C57
2018-10-05 15:44:40 s 1 +148756.27 7 +14176.690 8060.0 C57
2018-10-05 16:44:40 S 04 25 59.431 -58 26 51.58 V C57
2018-10-05 16:44:40 s 1 +150333.48 0 +19970.423 8390.0 C57
2018-10-05 19:14:40 S 04 24 56.297 -58 23 26.81 V C57
2018-10-05 19:14:40 s 1 +153651.21 3 +34360.049 1460.0 C57
2018-10-05 19:44:40 S 04 24 44.446 -58 22 47.42 V C57
2018-10-05 19:44:40 s 1 +154212.92 1 +37217.571 7900.0 C57
2018-10-05 22:14:40 S 04 23 45.521 -58 19 26.69 V C57
2018-10-05 22:14:40 s 1 +156547.20 1 +51379.176 8800.0 C57
2018-10-05 23:14:40 S 04 23 21.046 -58 18 16.02 V C57
2018-10-05 23:14:40 s 1 +157270.79 4 +56978.249 390.0 C57
2018-10-06 01:14:40 S 04 22 32.071 -58 15 22.93 V C57
2018-10-06 01:14:40 s 1 +158382.73 7 +68050.586 8000.0 C57
2018-10-06 13:14:40 S 04 17 40.918 -57 57 43.74 V C57
2018-10-06 13:14:40 s 1 +157272.26 5 +130344.37 0.989 C57
2018-10-06 16:14:40 S 04 16 25.903 -57 52 54.48 V C57
2018-10-06 16:14:40 s 1 +155314.38 1 +144706.65 0.622 C57
2018-10-06 16:44:40 S 04 16 14.242 -57 52 11.46 V C57
2018-10-06 16:44:40 s 1 +154934.58 9 +147051.66 0.349 C57
2018-10-06 18:44:40 S 04 15 22.586 -57 48 48.53 V C57
2018-10-06 18:44:40 s 1 +153272.56 3 +156292.23 0.897 C57
2018-10-06 22:14:40 S 04 13 55.507 -57 42 59.04 V C57
2018-10-06 22:14:40 s 1 +149852.03 3 +171926.91 0.228 C57
2018-10-06 23:44:40 S 04 13 18.823 -57 40 29.78 V C57
2018-10-06 23:44:40 s 1 +148202.63 7 +178419.32 0.432 C57
2018-10-07 01:14:40 S 04 12 40.298 -57 37 39.22 V C57
2018-10-07 01:14:40 s 1 +146451.36 4 +184787.56 0.369 C57
2018-10-07 01:44:40 S 04 12 28.966 -57 37 03.68 V C57
2018-10-07 01:44:40 s 1 +145845.88 1 +186882.82 0.146 C57