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79840 (1998 WR33)
Classification: Main-belt Asteroid          SPK-ID: 2079840
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1126926277426439 4.4636e-08  
a 2.654802354065421 1.4923e-08 au
q 2.355625700648432 1.2293e-07 au
i 13.89895111346237 4.3608e-06 deg
node 225.5393618500395 1.9592e-05 deg
peri 159.4761650033859 3.081e-05 deg
M 109.3922609975322 2.1827e-05 deg
tp 2458916.400983902008
(2020-Mar-07.90098390)
9.5692e-05 TDB
period 1579.962277214255
4.33
1.3322e-05
3.647e-08
d
yr
n .2278535413103291 1.9212e-09 deg/d
Q 2.95397900748241 1.6604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-09-25  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49642  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:09:41  

Additional Information
 Earth MOID = 1.36506 au 
 Jupiter MOID = 2.48755 au 
 T_jup = 3.338 
[ 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 15.33   n/a MPCxxxxx  
diameter diameter 2.836 km 0.664 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.115   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79840 (1998 WR33)          Discovered 1998-Nov-23 by LONEOS at Anderson Mesa
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1998 WR33 = 2001 MQ18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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