Giacobini-Zinner (21P)

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2026-03-24 (JD 2461123.5)
Eccentricity (e)0.7111070000
Semi-major axis (a)3.4907387856 AU
Inclination (i)32.05900000°
Long. of Asc. Node (Ω)195.29460000°
Arg. of Perihelion (ω)172.93950000°
Mean Anomaly (M)0.00000000°
Mean Motion (n)—°/day
Perihelion dist (q)1.00845000 AU
Aphelion dist (Q)5.97302757 AU
Orbital Period6.52192841 yr
Physical Parameters
H (abs. magnitude)9.00
G (slope)6.00
Orbit Solution
SourceMPC
Solution Date—
RMS Residual—″
Uncertainty—
Orbit TypeP
MOID0.010867 AU
Observations Used—
Oppositions—
Arc Total—
First Observation Used—
Last Observation Used—
Observations (7431)
Date Type RA Dec Mag Band Observatory
1998-07-23 14:01:30 C 16 22 49.30 +27 34 16.1 – – 360
1998-07-23 14:05:45 C 16 22 49.18 +27 34 14.7 – – 360
1998-07-26 21:05:30 C 16 21 01.12 +27 10 20.0 – – 118
1998-07-26 21:16:30 C 16 21 00.88 +27 10 16.4 – – 118
1998-07-27 12:35:23 C 16 20 42.80 +27 05 15.4 – – 897
1998-07-27 12:41:43 C 16 20 42.67 +27 05 13.1 – – 897
1998-07-27 13:04:45 C 16 20 42.19 +27 05 05.7 – – 897
1998-07-29 21:20:59 C 16 19 44.41 +26 45 13.7 – – 476
1998-07-29 21:52:30 C 16 19 43.99 +26 45 01.9 – – 476
1998-07-29 21:57:29 C 16 19 43.90 +26 45 01.3 – – 476
1998-07-29 22:04:29 C 16 19 43.81 +26 44 58.3 – – 476
1998-07-30 13:53:30 C 16 19 29.94 +26 39 05.3 – – 360
1998-07-30 13:57:30 C 16 19 29.87 +26 39 03.7 – – 360
1998-08-05 19:58:07 C 16 18 12.71 +25 36 24.8 – – 143
1998-08-05 20:09:23 C 16 18 12.75 +25 36 19.4 – – 143
1998-08-05 20:20:40 C 16 18 12.69 +25 36 15.4 – – 143
1998-08-05 20:24:44 C 16 18 12.50 +25 36 12.3 – – 118
1998-08-05 20:29:17 C 16 18 12.53 +25 36 10.0 – – 118
1998-08-05 20:31:12 C 16 18 12.52 +25 36 09.0 – – 118
1998-08-06 11:36:10 C 16 18 09.98 +25 29 18.9 – – 351
1998-08-06 11:51:14 C 16 18 10.02 +25 29 11.2 – – 351
1998-08-06 21:47:38 C 16 18 08.96 +25 24 29.3 – – 046
1998-08-06 21:51:03 C 16 18 08.96 +25 24 28.1 – – 046
1998-08-06 21:54:06 C 16 18 08.95 +25 24 27.0 – – 046
1998-08-09 19:39:55 C 16 18 14.25 +24 50 45.3 – – 118
1998-08-09 19:44:24 C 16 18 14.22 +24 50 42.7 – – 118
1998-08-09 20:03:09 C 16 18 14.28 +24 50 34.0 – – 143
1998-08-09 20:17:15 C 16 18 14.32 +24 50 26.8 – – 143
1998-08-09 20:34:10 C 16 18 14.35 +24 50 18.4 – – 143
1998-08-10 20:37:56 C 16 18 21.22 +24 38 08.9 – – 504
1998-08-10 20:47:07 C 16 18 21.24 +24 38 03.7 – – 504
1998-08-10 20:51:01 C 16 18 21.28 +24 38 02.2 – – 504
1998-08-10 20:53:11 C 16 18 21.32 +24 38 01.4 – – 504
1998-08-10 23:48:04 C 16 18 22.06 +24 36 30.7 – – 046
1998-08-10 23:49:29 C 16 18 22.07 +24 36 30.1 – – 046
1998-08-10 23:52:09 C 16 18 22.08 +24 36 28.7 – – 046
1998-08-11 12:20:18 C 16 18 27.17 +24 30 06.9 – – 351
1998-08-11 12:26:08 C 16 18 26.89 +24 30 05.3 – – 351
1998-08-11 12:27:39 C 16 18 26.90 +24 30 03.5 – – 402
1998-08-11 12:29:10 C 16 18 26.92 +24 30 02.6 – – 402
1998-08-11 12:30:40 C 16 18 26.92 +24 30 01.9 – – 402
1998-08-11 12:32:24 C 16 18 26.73 +24 30 00.7 – – 351
1998-08-11 12:34:56 C 16 18 27.14 +24 29 59.6 – – 351
1998-08-15 19:24:25 C 16 19 31.95 +23 34 40.5 – – 118
1998-08-15 19:31:27 C 16 19 32.03 +23 34 36.5 – – 118
1998-08-17 20:36:10 C 16 20 19.31 +23 06 43.9 – – 118
1998-08-17 20:45:29 C 16 20 19.48 +23 06 38.4 – – 118
1998-08-19 19:55:01 C 16 21 15.36 +22 38 58.5 – – 605
1998-08-19 20:11:35 C 16 21 15.74 +22 38 48.6 – – 605
1998-08-20 00:49:59 C 16 21 21.72 +22 36 04.2 – – 835