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2815 Soma (1982 RL)
Classification: Main-belt Asteroid          SPK-ID: 2002815
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686385248774905 1.4565e-08  
a 2.233169290376428 5.1998e-09 au
q 1.856570915445634 3.2701e-08 au
i 5.705613529555963 2.1392e-07 deg
node 119.8115577473844 3.7713e-06 deg
peri 237.7902677365901 6.5289e-06 deg
M 162.6051460023575 4.2256e-06 deg
tp 2458649.929824001043
(2019-Jun-15.42982400)
1.3661e-05 TDB
period 1218.935982239769
3.34
4.2574e-06
1.166e-08
d
yr
n .2953395463299949 1.0315e-09 deg/d
Q 2.60976766530722 6.0767e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3071  
   data-arc span      24017 days (65.75 yr)  
   first obs. used      1955-06-22  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4072  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:32:19  

Additional Information
 Earth MOID = .857713 au 
 Jupiter MOID = 2.83597 au 
 T_jup = 3.615 
[ 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 12.78   n/a MPCxxxxx  
diameter diameter 6.641 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.73325 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pollock, J.; Pravec, P.; Kusnirak, P.; Hornoch, K.; et al. (2011) CBET 2705.]
geometric albedo albedo 0.365   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2815 Soma (1982 RL)          Discovered 1982-Sep-15 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 RL = 1955 MH = 1970 AC = 1974 DL = 1979 XB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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