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
2009-08-03 09:10:41 C 01 20 44.64 +15 48 23.3 19.4 c 704
2009-08-03 09:26:41 C 01 20 48.19 +15 48 32.0 19.3 c 704
2009-08-03 09:42:32 C 01 20 51.71 +15 48 39.6 19.2 c 704
2009-08-03 09:58:18 C 01 20 55.15 +15 48 48.4 19.0 c 704
2009-08-13 21:11:41 C 02 33 13.56 +17 32 07.9 18.7 r C20
2009-08-14 00:12:23 C 02 34 18.35 +17 32 51.6 18.2 r C20
2009-08-14 00:15:02 C 02 34 19.30 +17 32 52.4 18.1 r C20
2009-08-14 21:07:30 C 02 42 04.68 +17 36 41.7 18.4 r C20
2009-08-14 23:35:00 C 02 43 00.04 +17 37 08.8 18.1 r C20
2009-08-15 23:42:05 C 02 52 21.82 +17 39 59.2 18.2 r C20
2009-08-15 23:47:39 C 02 52 24.00 +17 40 00.1 18.2 r C20
2009-08-18 23:56:57 C 03 22 51.56 +17 36 38.2 18.7 o C20
2009-08-18 23:58:12 C 03 22 52.14 +17 36 38.7 19.0 o C20
2009-08-19 23:55:26 C 03 33 46.57 +17 30 50.9 18.5 o C20
2009-08-19 23:59:46 C 03 33 48.55 +17 30 49.8 19.1 o C20
2009-08-20 00:00:23 C 03 33 48.81 +17 30 49.6 18.6 o C20
2009-08-20 00:00:59 C 03 33 49.09 +17 30 49.3 18.8 o C20
2009-08-21 09:33:59 C 03 49 43.34 +17 18 16.4 18.1 c 704
2009-08-21 10:09:42 C 03 50 00.40 +17 18 00.8 18.1 c 704
2009-08-21 10:27:29 C 03 50 08.84 +17 17 53.1 18.2 c 704
2009-08-23 22:18:54 C 04 20 06.61 +16 40 26.1 19.3 o C20
2010-07-15 22:19:53 C 20 51 55.75 +05 22 32.1 u A13
2010-07-15 22:45:18 C 20 51 53.54 +05 22 27.2 u A13
2010-07-27 22:22:28 C 20 21 28.84 +03 21 48.6 u 160
2010-07-27 22:25:24 C 20 21 28.46 +03 21 46.4 u 160
2010-07-27 22:28:29 C 20 21 28.09 +03 21 44.9 u 160
2010-07-30 22:24:10 C 20 12 03.52 +02 29 25.3 u C27
2010-07-30 22:42:23 C 20 12 00.93 +02 29 10.6 u C27
2010-07-30 22:50:38 C 20 11 59.79 +02 29 04.4 u C27
2010-07-31 22:31:22 C 20 08 45.92 +02 09 46.8 w I99
2010-07-31 22:45:35 C 20 08 43.92 +02 09 34.9 w I99
2010-07-31 22:52:42 C 20 08 42.92 +02 09 28.6 w I99
2010-08-10 02:08:07 C 19 36 36.73 -01 35 23.8 u H23
2010-08-10 02:29:02 C 19 36 33.41 -01 35 48.8 u H23
2010-08-10 02:49:54 C 19 36 30.14 -01 36 14.3 u H23
2010-08-13 05:11:24 C 19 25 12.58 -03 08 50.5 17.3 c 704
2010-08-13 05:47:24 C 19 25 06.85 -03 09 36.2 17.5 c 704
2010-08-13 06:05:34 C 19 25 04.12 -03 09 59.8 17.9 c 704
2010-08-15 22:03:19 C 19 15 27.43 -04 34 33.3 o J26
2011-06-19 23:32:05 C 19 14 28.65 +04 50 36.1 c A24
2011-06-19 23:34:10 C 19 14 28.50 +04 50 34.7 c A24
2011-06-29 11:45:10 C 18 50 52.503 +04 28 33.08 L F51
2011-06-29 11:59:32 C 18 50 50.847 +04 28 29.80 L F51
2011-06-29 12:16:10 C 18 50 48.952 +04 28 26.09 L F51
2011-07-06 19:41:04 C 18 30 58.58 +03 31 13.5 u 114
2011-07-06 19:46:31 C 18 30 57.86 +03 31 11.4 u 114
2011-07-06 19:52:11 C 18 30 57.08 +03 31 09.0 u 114
2012-05-24 01:49:12 C 18 03 57.47 +09 13 30.8 t 130
2012-05-24 01:51:23 C 18 03 57.40 +09 13 30.5 t 130
2012-05-29 01:22:56 C 17 50 47.49 +09 42 29.0 c A24
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)