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JPL Small-Body Database Browser
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85780 (1998 VK2)
Classification: Main-belt Asteroid          SPK-ID: 2085780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1801785375438108 4.275e-08  
a 2.778873319219181 1.9203e-08 au
q 2.278179988542754 1.2032e-07 au
i 3.461813303354373 4.9459e-06 deg
node 30.90883604702086 8.3144e-05 deg
peri 356.6333518043521 8.4295e-05 deg
M 162.1658014696621 1.5745e-05 deg
tp 2457838.318641730069
(2017-Mar-25.81864173)
7.0579e-05 TDB
period 1692.004642720598
4.63
1.7538e-05
4.802e-08
d
yr
n .2127653736346438 2.2054e-09 deg/d
Q 3.279566649895608 2.2663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      9391 days (25.71 yr)  
   first obs. used      1993-08-15  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58275  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:30  

Additional Information
 Earth MOID = 1.28216 au 
 Jupiter MOID = 2.1682 au 
 T_jup = 3.308 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO436375  
diameter diameter 4.924 km 1.622 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85780 (1998 VK2)          Discovered 1998-Nov-10 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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