Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
4034 Vishnu (1986 PA)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004034
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4440010189973528 5.4357e-08  
a 1.059572006846187 2.3521e-09 AU
q .5891209561054098 5.7231e-08 AU
i 11.16849145920504 5.5812e-06 deg
node 157.9637861394584 3.0791e-05 deg
peri 296.609869554589 2.8192e-05 deg
M 247.6643667465515 1.1532e-05 deg
tp 2457124.810890624744
(2015-Apr-12.31089062)
1.2873e-05 JED
period 398.3768936784261
1.09
1.3265e-06
3.632e-09
d
yr
n .9036668685172179 3.0091e-09 deg/d
Q 1.530023057586964 3.3965e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      480  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      10565 days (28.93 yr)  
   first obs. used      1986-08-02  
   last obs. used      2015-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51949  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-07 05:45:21  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jul-31 17:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin