IAA RAS IAA Minor Planet Database

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
2018-10-09 11:44:40 S 03 48 14.578 -55 35 14.60 – V C57
2018-10-09 11:44:40 s 1 +35049.350 0 +345810.09 7550.0 – C57
2018-10-09 12:14:40 S 03 48 03.432 -55 34 08.36 – V C57
2018-10-09 12:14:40 s 1 +33924.385 0 +346529.63 1920.0 – C57
2018-10-09 12:44:40 S 03 47 51.624 -55 32 58.06 – V C57
2018-10-09 12:44:40 s 1 +32798.563 0 +347239.12 6670.0 – C57
2018-10-09 13:14:40 S 03 47 40.697 -55 31 52.79 – V C57
2018-10-09 13:14:40 s 1 +31671.919 0 +347938.57 2030.0 – C57
2018-10-09 13:44:40 S 03 47 27.317 -55 30 28.94 – V C57
2018-10-09 13:44:40 s 1 +30544.484 0 +348628.02 8220.0 – C57
2018-10-09 15:44:40 S 03 46 37.908 -55 25 34.75 – V C57
2018-10-09 15:44:40 s 1 +26042.100 0 +351295.84 7470.0 – C57
2018-10-09 16:14:40 S 03 46 26.186 -55 24 24.62 – V C57
2018-10-09 16:14:40 s 1 +24911.330 0 +351935.67 1850.0 – C57
2018-10-09 17:14:40 S 03 46 01.447 -55 21 55.76 – V C57
2018-10-09 17:14:40 s 1 +22648.095 0 +353185.69 7490.0 – C57
2018-10-09 18:14:40 S 03 45 33.734 -55 19 01.09 – V C57
2018-10-09 18:14:40 s 1 +20382.824 0 +354396.31 3780.0 – C57
2018-10-09 18:44:40 S 03 45 21.050 -55 17 46.97 – V C57
2018-10-09 18:44:40 s 1 +19249.509 0 +354986.89 1470.0 – C57
2018-10-09 19:14:40 S 03 45 09.206 -55 16 35.18 – V C57
2018-10-09 19:14:40 s 1 +18115.784 0 +355567.67 2470.0 – C57
2018-10-09 20:14:40 S 03 44 47.748 -55 14 18.71 – V C57
2018-10-09 20:14:40 s 1 +15847.237 0 +356699.93 5280.0 – C57
2018-10-09 22:14:40 S 03 43 56.563 -55 08 57.19 – V C57
2018-10-09 22:14:40 s 1 +11306.653 0 +358847.73 0.0 – C57
2018-10-09 22:44:40 S 03 43 43.500 -55 07 35.11 – V C57
2018-10-09 22:44:40 s 1 +10170.965 0 +359360.46 120.0 – C57
2018-10-09 23:14:40 S 03 43 30.955 -55 06 15.05 – V C57
2018-10-09 23:44:40 S 03 43 20.136 -55 05 10.72 – V C57
2018-10-10 00:14:40 S 03 43 08.470 -55 03 57.46 – V C57
2018-10-10 00:44:40 S 03 42 54.794 -55 02 24.50 – V C57
2018-10-10 03:14:40 S 03 41 53.834 -54 56 02.04 – V C57
2018-10-10 03:44:40 S 03 41 40.910 -54 54 31.28 – V C57
2018-10-10 06:14:40 S 03 40 40.562 -54 48 00.94 – V C57
2018-10-10 06:44:40 S 03 40 26.902 -54 46 30.86 – V C57
2018-10-10 07:14:40 S 03 40 14.849 -54 45 16.16 – V C57
2018-10-10 09:14:40 S 03 39 26.441 -54 39 51.77 – V C57
2018-10-10 09:14:40 s 1 -13667.921 0 +367922.91 6100.0 – C57
2018-10-10 09:44:40 S 03 39 14.074 -54 38 29.94 – V C57
2018-10-10 09:44:40 s 1 -14800.148 0 +368226.93 660.0 – C57
2018-10-10 10:14:40 S 03 39 00.787 -54 36 59.47 – V C57
2018-10-10 10:14:40 s 1 -15931.891 0 +368521.62 4370.0 – C57
2018-10-10 10:44:40 S 03 38 47.904 -54 35 42.90 – V C57
2018-10-10 10:44:40 s 1 -17063.121 0 +368807.01 7410.0 – C57
2018-10-10 11:14:40 S 03 38 36.242 -54 34 17.47 – V C57
2018-10-10 11:14:40 s 1 -18193.811 0 +369083.10 9950.0 – C57
2018-10-10 12:14:40 S 03 38 11.998 -54 31 33.60 – V C57
2018-10-10 12:14:40 s 1 -20453.466 0 +369607.46 4270.0 – C57
2018-10-10 12:44:40 S 03 38 00.046 -54 30 11.48 – V C57