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JPL Small-Body Database Browser
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91914 (1999 VD31)
Classification: Main-belt Asteroid          SPK-ID: 2091914
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956303327791327 4.7226e-08  
a 3.15176311503577 2.535e-08 au
q 2.535182648000327 1.5581e-07 au
i .9058220294469967 4.6188e-06 deg
node 80.10917854494384 0.0003295 deg
peri 320.9042670941997 0.00032979 deg
M 264.6557557948977 1.704e-05 deg
tp 2459541.778478373753
(2021-Nov-23.27847837)
0.00010184 TDB
period 2043.754752466991
5.60
2.4657e-05
6.751e-08
d
yr
n .1761463793860043 2.1251e-09 deg/d
Q 3.768343582071214 3.0309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      9418 days (25.79 yr)  
   first obs. used      1993-09-15  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55056  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:39:36  

Additional Information
 Earth MOID = 1.5436 au 
 Jupiter MOID = 1.64838 au 
 T_jup = 3.177 
[ 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 15.0   n/a MPO432456  
diameter diameter 4.995 km 0.776 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.071   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91914 (1999 VD31)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 VD31 = 1998 MD49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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