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43085 (1999 WE2)
Classification: Main-belt Asteroid          SPK-ID: 2043085
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03573343682626742 4.779e-08  
a 2.751267163566109 1.6278e-08 au
q 2.652954932184636 1.2632e-07 au
i 10.38234611361207 5.7334e-06 deg
node 234.318368477691 2.337e-05 deg
peri 284.3835090632621 7.9271e-05 deg
M 111.782726486342 7.5445e-05 deg
tp 2458682.929193919084
(2019-Jul-18.42919392)
0.00034899 TDB
period 1666.854048437399
4.56
1.4793e-05
4.05e-08
d
yr
n .2159757180525096 1.9168e-09 deg/d
Q 2.849579394947583 1.686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      13585 days (37.19 yr)  
   first obs. used      1983-05-06  
   last obs. used      2020-07-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54437  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:15:36  

Additional Information
 Earth MOID = 1.67899 au 
 Jupiter MOID = 2.18096 au 
 T_jup = 3.321 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO468284  
diameter diameter 3.173 km 0.880 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 19.305 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.231   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43085 (1999 WE2)          Discovered 1999-Nov-19 by Kusnirak, P. at Ondrejov
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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