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21018 (1988 VV1)
Classification: Main-belt Asteroid          SPK-ID: 2021018
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2518570247667809 7.5235e-08  
a 2.916635312278245 3.9202e-08 AU
q 2.182060220198116 2.2147e-07 AU
i 12.51764058998837 8.3271e-06 deg
node 302.536516773961 4.6014e-05 deg
peri 356.4700719452748 5.1422e-05 deg
M 110.6089392056216 2.5891e-05 deg
tp 2456241.503166584700
(2012-Nov-10.00316658)
0.00013079 JED
period 1819.372479971133
4.98
3.6681e-05
1.004e-07
d
yr
n .1978704217872483 3.9893e-09 deg/d
Q 3.651210404358375 4.9076e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      22039 days (60.34 yr)  
   first obs. used      1953-10-12  
   last obs. used      2014-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43501  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:53:00  

Additional Information
 Earth MOID = 1.16576 AU 
 T_jup = 3.199 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO240375  
diameter diameter 13.32 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
geometric albedo albedo 0.0908   0.034 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5

21018 (1988 VV1)          Discovered 1988-Nov-02 by Oshima, Y. at Gekko (888)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1988 VV1 = 2000 AL9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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