4034 Vishnu (1986 PA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4440123499 ± 1.15e-02
Semi-major axis (a)1.0593661162 AU ± 1.24e-02
Inclination (i)11.16925766° ± 6.63e-01
Long. of Asc. Node (Ω)157.86471855° ± 1.66e+00
Arg. of Perihelion (ω)296.70262904° ± 3.25e+00
Mean Anomaly (M)261.95042071° ± 1.98e+00
Mean Motion (n)0.9039473986°/day ± 1.59e-02
Perihelion dist (q)0.58899448 AU ± 1.40e-02
Aphelion dist (Q)1.52973775 AU ± 2.17e-02
Orbital Period1.09035801 yr ± 1.92e-02
NGA Modelr2
A2-3.37481791e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.333″
Uncertainty0
Orbit TypeApollo
MOID0.018713 AU
Observations Used1245
Radar Obs Used1
Oppositions1
Arc Total1986-2025
First Observation Used1986-08-02
Last Observation Used2025-06-24
Observations (1315)
Date Type RA Dec Mag Band Observatory
1986-08-02 06:35:59 A 20 03 28.95 +01 45 12.5 18.2 675
1986-08-02 07:36:00 A 20 03 19.61 +01 44 13.5 675
1986-08-04 04:39:59 A 19 56 52.32 +01 01 51.7 675
1986-08-04 05:39:59 A 19 56 43.06 +01 00 50.8 675
1986-08-05 05:00:59 A 19 53 19.18 +00 37 35.4 675
1986-08-05 06:00:59 A 19 53 09.77 +00 36 33.0 675
1986-08-09 04:21:00 A 19 39 04.46 -01 07 06.2 675
1986-08-09 05:20:59 A 19 38 54.91 -01 08 14.5 675
1986-08-10 04:28:31 A 19 35 24.18 -01 35 44.3 A 801
1986-08-15 06:06:59 A 19 17 03.45 -04 10 35.2 675
1986-08-15 06:11:00 A 19 17 02.78 -04 10 40.7 675
1986-08-16 07:16:50 A 19 13 18.66 -04 44 26.0 675
1986-08-16 07:21:59 A 19 13 17.85 -04 44 32.8 675
1986-09-02 01:18:29 A 18 21 21.15 -14 08 59.8 A 801
1986-09-02 03:43:24 A 18 21 05.96 -14 12 19.0 B 691
1986-09-02 03:54:43 A 18 21 04.72 -14 12 34.9 B 691
1986-09-02 04:05:58 A 18 21 03.40 -14 12 50.1 B 691
1986-09-03 03:30:59 A 18 18 38.33 -14 44 55.6 B 691
1986-09-03 03:53:11 A 18 18 35.88 -14 45 25.6 B 691
1986-09-03 04:15:40 A 18 18 33.37 -14 45 56.7 B 691
1986-09-09 10:33:38 A 18 04 39.51 -18 05 22.1 474
1986-09-09 11:20:49 A 18 04 35.29 -18 06 23.5 474
1987-05-23 08:18:46 A 19 51 49.44 +01 53 35.9 B 691
1987-05-23 08:38:16 A 19 51 49.04 +01 53 44.2 B 691
1987-05-23 08:54:48 A 19 51 48.64 +01 53 51.3 B 691
1987-05-24 08:24:05 A 19 51 18.80 +02 03 57.9 B 691
1987-05-24 09:27:50 A 19 51 17.26 +02 04 25.2 B 691
1987-05-24 09:38:46 A 19 51 16.93 +02 04 29.7 B 691
1987-06-23 08:15:19 A 19 05 57.36 +04 51 41.9 B 691
1987-06-23 08:23:08 A 19 05 56.50 +04 51 41.9 B 691
1987-06-23 08:46:27 A 19 05 54.03 +04 51 40.4 B 691
1987-07-22 06:21:38 A 17 51 36.36 -00 04 54.3 B 691
1987-07-22 06:50:36 A 17 51 33.66 -00 05 15.0 B 691
1987-07-23 05:27:46 A 17 49 34.39 -00 21 29.3 688
1987-07-23 05:33:56 A 17 49 33.82 -00 21 33.6 688
1987-08-17 04:15:23 A 17 19 02.24 -07 58 02.9 B 691
1987-08-17 04:46:10 A 17 19 01.66 -07 58 25.9 B 691
1988-05-25 09:32:44 A 17 59 45.42 +09 25 24.9 675
1988-05-25 09:42:16 A 17 59 44.37 +09 25 27.1 675
1988-05-25 09:47:57 A 17 59 43.66 +09 25 28.9 675
1988-05-26 07:24:04 A 17 57 22.57 +09 31 04.1 675
1988-05-26 07:32:30 A 17 57 21.49 +09 31 06.1 675
1988-05-26 07:39:01 A 17 57 20.82 +09 31 07.8 675
1988-07-06 07:33:50 A 16 20 41.08 +04 15 49.8 675
1988-07-06 07:41:34 A 16 20 40.66 +04 15 44.6 675
1988-07-06 07:54:26 A 16 20 39.95 +04 15 35.5 675
1988-07-07 08:17:20 A 16 19 25.70 +03 58 36.3 675
1988-07-07 08:24:05 A 16 19 25.36 +03 58 32.1 675
1988-07-07 08:33:24 A 16 19 24.87 +03 58 24.7 675
1997-06-29 13:03:56 C 23 24 24.24 +08 06 22.9 a 568
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1989-03-26 14:00:00 56566 2 Hz 2380 -1 -1
1989-03-26.583333 5656600 200 Hz 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)