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4034 Vishnu (1986 PA)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004034
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4440010152184238 5.4428e-08  
a 1.059572007156092 2.3551e-09 AU
q .5891209602817641 5.7309e-08 AU
i 11.16849063517679 5.6315e-06 deg
node 157.9637893657072 3.0891e-05 deg
peri 296.6098679515405 2.8232e-05 deg
M 247.6643640150621 1.1617e-05 deg
tp 2457124.810893701955
(2015-Apr-12.31089370)
1.2968e-05 JED
period 398.3768938532026
1.09
1.3282e-06
3.636e-09
d
yr
n .9036668681207599 3.0129e-09 deg/d
Q 1.530023054030419 3.4008e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      477  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      10173 days (27.85 yr)  
   first obs. used      1986-08-02  
   last obs. used      2014-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51149  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:27:31  

Additional Information
 Earth MOID = .0194904 AU 
 T_jup = 5.704 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.4 mag n/a MPO263383  
diameter diameter 0.42 km n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
geometric albedo albedo 0.52   n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
SMASSII spectral type spec_B O   n/a Binzel et al. (2004) Icarus 170, 259-294  

4034 Vishnu           Discovered 1986 Aug. 2 by E. F. Helin at Palomar.
Vishnu is the Hindu god of preservation. Name suggested by J. Meeus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110715/MPCPages.arcLast Updated: 2011-07-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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