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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124239233064217 5.3853e-08  
a 2.654068805799739 1.6488e-08 au
q 2.355687977926542 1.5004e-07 au
i 13.90083605829803 4.5479e-06 deg
node 225.5516716680021 2.0127e-05 deg
peri 159.3841180538104 3.1716e-05 deg
M 19.24697976065004 2.2028e-05 deg
tp 2458916.064168967953
(2020-Mar-07.56416897)
9.6648e-05 TDB
period 1579.307483539968
4.32
1.4717e-05
4.029e-08
d
yr
n .2279480112340576 2.1241e-09 deg/d
Q 2.952449633672935 1.8341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      7702 days (21.09 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51592  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 09:25:46  

Additional Information
 Earth MOID = 1.36582 au 
 Jupiter MOID = 2.48705 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 15.3   n/a MPO449501  
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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