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
2018-10-08 06:14:40 S 04 00 35.383 -56 42 35.42 – V C57
2018-10-08 06:14:40 s 1 +98376.103 0 +284695.29 9580.0 – C57
2018-10-08 06:44:40 S 04 00 23.191 -56 41 37.43 – V C57
2018-10-08 06:44:40 s 1 +97381.227 0 +286052.57 6550.0 – C57
2018-10-08 08:44:40 S 03 59 30.842 -56 37 14.95 – V C57
2018-10-08 08:44:40 s 1 +93364.102 0 +291365.35 1300.0 – C57
2018-10-08 09:44:40 S 03 59 05.808 -56 35 01.32 – V C57
2018-10-08 09:44:40 s 1 +91333.929 0 +293952.40 9850.0 – C57
2018-10-08 11:14:40 S 03 58 26.854 -56 31 47.86 – V C57
2018-10-08 11:14:40 s 1 +88263.149 0 +297747.06 7350.0 – C57
2018-10-08 11:44:40 S 03 58 15.674 -56 30 52.09 – V C57
2018-10-08 11:44:40 s 1 +87233.007 0 +298989.17 6060.0 – C57
2018-10-08 12:14:40 S 03 58 03.602 -56 29 44.41 – V C57
2018-10-08 12:14:40 s 1 +86199.694 0 +300219.93 210.0 – C57
2018-10-08 12:44:40 S 03 57 51.559 -56 28 42.92 – V C57
2018-10-08 12:44:40 s 1 +85163.274 0 +301439.39 180.0 – C57
2018-10-08 13:14:40 S 03 57 37.512 -56 27 33.41 – V C57
2018-10-08 13:14:40 s 1 +84123.806 0 +302647.57 6370.0 – C57
2018-10-08 13:44:40 S 03 57 24.902 -56 26 35.66 – V C57
2018-10-08 13:44:40 s 1 +83081.349 0 +303844.50 9150.0 – C57
2018-10-08 14:44:40 S 03 57 00.514 -56 24 11.95 – V C57
2018-10-08 14:44:40 s 1 +80987.709 0 +306204.76 6010.0 – C57
2018-10-08 15:14:40 S 03 56 49.303 -56 23 13.31 – V C57
2018-10-08 15:14:40 s 1 +79936.642 0 +307368.14 820.0 – C57
2018-10-08 17:14:40 S 03 55 59.059 -56 18 49.79 – V C57
2018-10-08 17:14:40 s 1 +75705.374 0 +311910.75 4470.0 – C57
2018-10-08 18:14:40 S 03 55 32.150 -56 16 27.91 – V C57
2018-10-08 18:14:40 s 1 +73574.314 0 +314115.91 1870.0 – C57
2018-10-08 21:44:40 S 03 54 06.365 -56 08 37.43 – V C57
2018-10-08 21:44:40 s 1 +66041.822 0 +321490.68 5920.0 – C57
2018-10-08 22:14:40 S 03 53 53.030 -56 07 29.35 – V C57
2018-10-08 22:14:40 s 1 +64957.060 0 +322501.00 5230.0 – C57
2018-10-08 22:44:40 S 03 53 42.550 -56 06 31.72 – V C57
2018-10-08 22:44:40 s 1 +63870.271 0 +323500.60 7310.0 – C57
2018-10-08 23:14:40 S 03 53 28.754 -56 05 15.43 – V C57
2018-10-08 23:14:40 s 1 +62781.504 0 +324489.50 2470.0 – C57
2018-10-09 01:44:40 S 03 52 26.222 -55 59 27.85 – V C57
2018-10-09 01:44:40 s 1 +57309.637 0 +329274.49 5180.0 – C57
2018-10-09 02:14:40 S 03 52 12.490 -55 58 09.01 – V C57
2018-10-09 02:14:40 s 1 +56209.977 0 +330199.77 5170.0 – C57
2018-10-09 02:44:40 S 03 51 59.758 -55 56 57.26 – V C57
2018-10-09 02:44:40 s 1 +55108.658 0 +331114.53 330.0 – C57
2018-10-09 05:44:40 S 03 50 46.786 -55 50 02.22 – V C57
2018-10-09 05:44:40 s 1 +48468.358 0 +336383.73 5390.0 – C57
2018-10-09 08:14:40 S 03 49 43.500 -55 43 55.70 – V C57
2018-10-09 08:14:40 s 1 +42896.965 0 +340490.09 7180.0 – C57
2018-10-09 08:44:40 S 03 49 30.550 -55 42 39.20 – V C57
2018-10-09 08:44:40 s 1 +41779.049 0 +341280.59 5720.0 – C57
2018-10-09 09:14:40 S 03 49 19.272 -55 41 33.86 – V C57
2018-10-09 09:14:40 s 1 +40660.011 0 +342060.89 2920.0 – C57