Hartley-IRAS (161P)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2026-03-24 (JD 2461123.5)
Eccentricity (e)0.8361420000
Semi-major axis (a)7.7206910862 AU
Inclination (i)95.78950000°
Long. of Asc. Node (Ω)1.47730000°
Arg. of Perihelion (ω)47.07340000°
Mean Anomaly (M)0.00000000°
Mean Motion (n)—°/day
Perihelion dist (q)1.26509700 AU
Aphelion dist (Q)14.17628517 AU
Orbital Period21.45281385 yr
Physical Parameters
H (abs. magnitude)8.50
G (slope)6.00
Orbit Solution
SourceMPC
Solution Date—
RMS Residual—″
Uncertainty—
Orbit TypeP
MOID0.435913 AU
Observations Used—
Oppositions—
Arc Total—
First Observation Used—
Last Observation Used—
Observations (425)
Date Type RA Dec Mag Band Observatory
2026-07-25 14:32:06 C 03 21 15.408 -19 54 06.77 – V T05
2026-07-28 14:03:58 C 03 21 32.866 -19 43 25.21 – V T08
2026-07-28 14:09:54 C 03 21 32.926 -19 43 25.14 – V T08
2026-07-28 14:24:22 C 03 21 32.911 -19 43 23.05 – V T08
2026-07-28 14:39:30 C 03 21 32.947 -19 43 20.89 – V T08
2026-07-28 18:35:42 C 03 21 33.42 -19 42 48.0 – m 349
2026-07-28 18:49:52 C 03 21 33.49 -19 42 45.2 – m 349
2026-08-03 13:40:06 C 03 21 19.466 -19 24 12.67 – V T08
2026-08-03 13:51:57 C 03 21 19.466 -19 24 10.55 – V T08
2026-08-03 14:09:43 C 03 21 19.373 -19 24 08.06 – V T08
2026-08-03 14:15:21 C 03 21 19.308 -19 24 08.35 – V T08
2026-08-03 14:29:31 C 03 21 19.214 -19 24 06.19 – V T08
2026-08-03 14:34:49 C 03 21 19.135 -19 24 05.54 – V T08
2026-08-03 14:46:11 C 03 21 19.075 -19 24 03.24 – V T08
2026-08-11 12:58:26 C 03 18 52.342 -19 02 40.27 – V T05
2026-08-11 13:07:45 C 03 18 52.171 -19 02 39.37 – V T05
2026-08-11 13:13:10 C 03 18 52.049 -19 02 39.37 – V T05
2026-08-11 13:29:09 C 03 18 51.710 -19 02 38.62 – V T05
2026-08-12 12:12:34 C 03 18 21.830 -19 00 19.62 – V T05
2026-08-12 12:42:30 C 03 18 21.190 -19 00 17.10 – V T05
2026-08-12 12:48:18 C 03 18 20.945 -19 00 15.84 – V T05
2026-08-12 13:01:26 C 03 18 20.474 -19 00 16.06 – V T05
2026-08-13 02:30:04 C 03 18 01.315 -18 58 54.98 – W 215
2026-08-13 02:31:56 C 03 18 01.241 -18 58 54.55 – W 215
2026-08-13 02:33:48 C 03 18 01.174 -18 58 55.34 – W 215