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21934 (1999 VY71)
Classification: Main-belt Asteroid          SPK-ID: 2021934
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1081613509498116 3.0713e-08  
a 2.650363349502052 9.7583e-09 au
q 2.363696469112043 8.5078e-08 au
i 12.75186822384044 3.1338e-06 deg
node 153.5739306174787 1.6338e-05 deg
peri 311.2047693779301 2.373e-05 deg
M 312.4924292778649 1.7362e-05 deg
tp 2459408.477750032664
(2021-Jul-12.97775003)
7.6168e-05 TDB
period 1576.001232512489
4.31
8.704e-06
2.383e-08
d
yr
n .2284262172981183 1.2616e-09 deg/d
Q 2.937030229892062 1.0814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2457  
   data-arc span      11983 days (32.81 yr)  
   first obs. used      1988-05-19  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:55:59  

Additional Information
 Earth MOID = 1.39955 au 
 Jupiter MOID = 2.18069 au 
 T_jup = 3.347 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.15   n/a E2021B10  
diameter diameter 6.920 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21934 (1999 VY71)          Discovered 1999-Nov-07 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VY71 = 1998 RP34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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