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
2018-10-10 12:44:40 s 1 -21582.376 0 +369855.75 6380.0 – C57
2018-10-10 15:14:40 S 03 36 58.716 -54 23 17.66 – V C57
2018-10-10 15:14:40 s 1 -27216.687 0 +370958.75 3460.0 – C57
2018-10-10 15:44:40 S 03 36 46.150 -54 21 46.73 – V C57
2018-10-10 15:44:40 s 1 -28341.317 0 +371151.75 9370.0 – C57
2018-10-10 16:14:40 S 03 36 34.469 -54 20 28.07 – V C57
2018-10-10 16:14:40 s 1 -29465.140 0 +371335.57 6510.0 – C57
2018-10-10 18:44:40 S 03 35 32.513 -54 13 16.00 – V C57
2018-10-10 18:44:40 s 1 -35071.261 0 +372117.47 6450.0 – C57
2018-10-10 20:14:40 S 03 34 56.851 -54 08 56.51 – V C57
2018-10-10 20:14:40 s 1 -38423.608 0 +372477.21 7790.0 – C57
2018-10-10 22:14:40 S 03 34 07.824 -54 03 18.86 – V C57
2018-10-10 22:14:40 s 1 -42878.759 0 +372829.82 8330.0 – C57
2018-10-11 01:14:40 S 03 32 54.840 -53 54 35.50 – V C57
2018-10-11 01:14:40 s 1 -49526.812 0 +373087.70 3180.0 – C57
2018-10-11 02:14:40 S 03 32 31.354 -53 51 43.63 – V C57
2018-10-11 02:14:40 s 1 -51732.780 0 +373101.68 970.0 – C57
2018-10-11 03:14:40 S 03 32 07.718 -53 48 51.16 – V C57
2018-10-11 03:14:40 s 1 -53933.390 0 +373079.77 7300.0 – C57
2018-10-11 04:44:40 S 03 31 31.778 -53 44 26.45 – V C57
2018-10-11 04:44:40 s 1 -57223.825 0 +372979.77 4270.0 – C57
2018-10-11 09:14:40 S 03 29 44.453 -53 31 12.32 – V C57
2018-10-11 09:14:40 s 1 -67013.429 0 +372198.28 4330.0 – C57
2018-10-11 11:44:40 S 03 28 43.682 -53 23 23.39 – V C57
2018-10-11 11:44:40 s 1 -72394.244 0 +371453.38 5330.0 – C57
2018-10-11 12:14:40 S 03 28 31.027 -53 21 50.22 – V C57
2018-10-11 12:14:40 s 1 -73465.077 0 +371277.85 3630.0 – C57
2018-10-11 12:44:40 S 03 28 20.700 -53 20 32.03 – V C57
2018-10-11 12:44:40 s 1 -74534.077 0 +371093.49 9660.0 – C57
2018-10-11 13:14:40 S 03 28 07.812 -53 18 53.24 – V C57
2018-10-11 13:14:40 s 1 -75601.218 0 +370900.31 3560.0 – C57
2018-10-11 14:44:40 S 03 27 31.704 -53 14 13.52 – V C57
2018-10-11 14:44:40 s 1 -78791.239 0 +370267.83 4050.0 – C57
2018-10-11 15:14:40 S 03 27 20.916 -53 12 48.46 – V C57
2018-10-11 15:14:40 s 1 -79850.697 0 +370039.37 990.0 – C57
2018-10-11 18:14:40 S 03 26 08.479 -53 03 17.57 – V C57
2018-10-11 18:14:40 s 1 -86164.928 0 +368483.93 9370.0 – C57
2018-10-11 18:44:40 S 03 25 57.302 -53 01 55.49 – V C57
2018-10-11 18:44:40 s 1 -87209.981 0 +368193.94 9990.0 – C57
2018-10-11 19:14:40 S 03 25 44.513 -53 00 13.18 – V C57
2018-10-11 19:14:40 s 1 -88252.877 0 +367895.18 310.0 – C57
2018-10-11 19:44:40 S 03 25 34.279 -52 58 54.80 – V C57
2018-10-11 19:44:40 s 1 -89293.589 0 +367587.65 500.0 – C57
2018-10-11 20:14:40 S 03 25 22.253 -52 57 14.65 – V C57
2018-10-11 20:14:40 s 1 -90332.093 0 +367271.34 700.0 – C57
2018-10-11 21:44:40 S 03 24 45.538 -52 52 22.62 – V C57
2018-10-11 21:44:40 s 1 -93434.101 0 +366269.87 7090.0 – C57
2018-10-11 22:14:40 S 03 24 35.112 -52 50 59.14 – V C57
2018-10-11 22:14:40 s 1 -94463.519 0 +365918.53 5300.0 – C57
2018-10-11 22:44:40 S 03 24 23.059 -52 49 22.51 – V C57