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21084 (1991 UV3)
Classification: Main-belt Asteroid          SPK-ID: 2021084
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712586647959513 3.4764e-08  
a 2.725498283786702 1.2359e-08 au
q 2.258733086801735 9.4293e-08 au
i 8.80643199307708 4.6582e-06 deg
node 237.5594384800404 2.7285e-05 deg
peri 224.4098256632664 3.1912e-05 deg
M 165.4734783702215 1.4995e-05 deg
tp 2458641.071802280321
(2019-Jun-06.57180228)
6.7275e-05 TDB
period 1643.490871513734
4.50
1.1179e-05
3.061e-08
d
yr
n .2190459382767504 1.49e-09 deg/d
Q 3.19226348077167 1.4476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1457  
   data-arc span      10823 days (29.63 yr)  
   first obs. used      1991-10-31  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:57:08  

Additional Information
 Earth MOID = 1.28511 au 
 Jupiter MOID = 2.04074 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457055.5 (2015-Feb-02.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719667494721761 3.4748e-08  
q 2.257606042474689 9.4341e-08 au
tp 2457000.272131926177
(2014-Dec-08.77213193)
6.6026e-05 TDB
node 237.6333293280539 2.7294e-05 deg
peri 224.9301774856526 3.1862e-05 deg
i 8.804656603115383 4.6569e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1457  
   data-arc span      10823 days (29.63 yr)  
   first obs. used      1991-10-31  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:57:08  

Additional Information
 Jupiter MOID = 2.04074 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.207454988763551E-15 -3.258501857582933E-15 -2.940940923744879E-13 6.289662583072976E-15 -9.668526220215215E-14 -1.776439046201029E-15
q -3.258501857582933E-15 8.900138816830559E-15 7.784339454712937E-13 -1.828967322043588E-14 2.600003183649855E-13 5.217189340796271E-15
tp -2.940940923744879E-13 7.784339454712937E-13 4.359484922640541E-9 -6.221352529741066E-12 1.100305425607783E-9 -3.450877067835274E-12
node 6.289662583072976E-15 -1.828967322043588E-14 -6.221352529741066E-12 7.449456579386679E-10 -7.376439935258282E-10 -2.256893749724875E-11
peri -9.668526220215215E-14 2.600003183649855E-13 1.100305425607783E-9 -7.376439935258282E-10 1.015174121671123E-9 2.15237278164787E-11
i -1.776439046201029E-15 5.217189340796271E-15 -3.450877067835274E-12 -2.256893749724875E-11 2.15237278164787E-11 2.168639709917354E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO467953  
diameter diameter 4.967 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.216   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21084 (1991 UV3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 UV3 = 1998 KV27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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