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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1793883107983945 4.2874e-08  
a 2.781241899100421 1.9016e-08 au
q 2.282319612899078 1.2099e-07 au
i 3.459414234349527 4.9426e-06 deg
node 30.8902956932577 8.3209e-05 deg
peri 356.4588897587088 8.4369e-05 deg
M 247.4439921035292 1.6233e-05 deg
tp 2459530.191193352876
(2021-Nov-11.69119335)
7.9439e-05 TDB
period 1694.168380442485
4.64
1.7375e-05
4.757e-08
d
yr
n .2124936364979109 2.1793e-09 deg/d
Q 3.280164185301765 2.2427e-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 = 1.28695 au 
 Jupiter MOID = 2.17042 au 
 T_jup = 3.307 
[ 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2174-Mar-30 12:42 00:20 Amphi 0.0290581808909596 0.0290546193757899 0.0290617787599672 2.27567368937075 2.27567360243576 2515186.028941787 20.3354821083935 1740.27417760206 63.3114883157621 -84.4889689754027 68235.8445569085 T 16 CATAB v2.0e-lin.ifort 2019-Jul-13 12:28:33 2019-Jul-13 12:28
2189-Sep-30 00:27 00:01 David 0.0479705424373527 0.0479636582351674 0.0479774576145931 5.43844198925884 5.43844193135146 2520848.518649126 1.12061384777916 1963.80881905894 38.5430927099241 -79.9777745475625 183258.573891712 T 16 CATAB v2.0e-lin.ifort 2019-Jul-13 12:28:33 2019-Jul-13 12:28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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