2017 HW4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3623646000
Semi-major axis (a)0.9780623000 AU
Inclination (i)18.58897000°
Long. of Asc. Node (Ω)218.30562000°
Arg. of Perihelion (ω)116.79800000°
Mean Anomaly (M)226.87116000°
Mean Motion (n)1.0189533500°/day
Perihelion dist (q)0.62364710 AU
Aphelion dist (Q)1.33247750 AU
Orbital Period0.96727460 yr
Physical Parameters
H (abs. magnitude)22.03
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.570″
Uncertainty1
Orbit TypeAten
MOID0.005058 AU
Observations Used68
Oppositions3
Arc Total2010-2018
First Observation Used
Last Observation Used2018-04-23
Observations (63)
Date Type RA Dec Mag Band Observatory
2017-04-29 03:59:33 C 09 51 08.74 -03 37 22.2 q I52
2017-04-29 04:00:08 C 09 51 08.50 -03 37 16.4 q I52
2017-04-29 20:28:43 C 09 45 37.35 -00 54 17.1 U 204
2017-04-29 20:36:08 C 09 45 34.76 -00 53 02.2 U 204
2017-04-29 20:43:33 C 09 45 32.16 -00 51 48.5 U 204
2017-04-29 21:52:12 S 09 45 11.230 -00 39 15.77 L C51
2017-04-29 21:52:23 S 09 45 11.184 -00 39 14.94 L C51
2017-04-29 23:26:38 S 09 44 39.576 -00 23 34.01 L C51
2017-05-01 01:06:59 C 09 36 00.15 +03 54 33.8 u 807
2017-05-01 01:11:15 C 09 35 58.61 +03 55 16.8 u 807
2017-05-01 01:15:32 C 09 35 57.07 +03 55 59.7 u 807
2018-04-23 05:14:45 S 20 18 10.978 -17 54 15.23 L C51
2018-04-23 08:23:04 S 20 20 05.940 -17 26 05.50 L C51