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2802 Weisell (1939 BU)
Classification: Main-belt Asteroid          SPK-ID: 2002802
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 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1231069349523144 2.3428e-08  
a 3.113283205895763 1.3948e-08 au
q 2.730016452779421 7.6169e-08 au
i 9.613886177342733 1.7689e-07 deg
node 129.3374033949649 1.7948e-06 deg
peri 59.30395133166841 4.765e-06 deg
M 270.0716215946236 4.1166e-06 deg
tp 2459701.711043772571
(2022-May-02.21104377)
2.4307e-05 TDB
period 2006.440891714533
5.49
1.3484e-05
3.692e-08
d
yr
n .1794221805818434 1.2058e-09 deg/d
Q 3.496549959012106 1.5665e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3062  
   data-arc span      30016 days (82.18 yr)  
   first obs. used      1939-01-18  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42087  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:31:45  

Additional Information
 Earth MOID = 1.74702 au 
 Jupiter MOID = 1.53485 au 
 T_jup = 3.185 
[ 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 11.04   n/a MPCxxxxx  
diameter diameter 18.813 km 0.371 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.683 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:
[Brinsfield, J.W. (2011) Minor Planet Bull. 38, 154-155.]
geometric albedo albedo 0.199   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2802 Weisell (1939 BU)          Discovered 1939-Jan-19 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1939 BU = 1945 GA = 1951 KZ = 1952 OT = 1962 JO = 1969 RQ = 1975 VB6 = 1977 AL = 1978 GM2 = 1983 CZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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