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100021 (1990 QV7)
Classification: Main-belt Asteroid          SPK-ID: 2100021
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027385209366221 3.9986e-08  
a 2.422046517452361 9.2885e-09 au
q 1.931004388864373 9.8958e-08 au
i .3905386283465155 3.93e-06 deg
node 235.5138922378575 0.0006796 deg
peri 115.1130219686011 0.00067967 deg
M 4.109683133838852 1.0545e-05 deg
tp 2459184.782698507567
(2020-Dec-01.28269851)
4.0291e-05 TDB
period 1376.804087567299
3.77
7.9201e-06
2.168e-08
d
yr
n .2614751098219724 1.5041e-09 deg/d
Q 2.913088646040349 1.1172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      11071 days (30.31 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51825  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:11  

Additional Information
 Earth MOID = .923387 au 
 Jupiter MOID = 2.51868 au 
 T_jup = 3.484 
[ 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 15.79   n/a E2021B55  
diameter diameter 2.134 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.223   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100021 (1990 QV7)          Discovered 1990-Aug-16 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1990 QV7 = 2000 GA8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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