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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685114746569748 3.6013e-08  
a 2.233300191964142 5.7139e-09 au
q 1.856963483264559 7.9202e-08 au
i 5.705568863852433 3.496e-06 deg
node 119.8116959430091 3.6875e-05 deg
peri 237.7835193572672 3.8542e-05 deg
M 103.558881952979 1.1573e-05 deg
tp 2458649.825703810597
(2019-Jun-15.32570381)		 3.8905e-05 TDB
period 1219.04315928696
3.34		 4.6784e-06
1.281e-08		 d
yr
n .2953135803744392 1.1333e-09 deg/d
Q 2.609636900663724 6.6768e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2690  
   data-arc span      23601 days (64.62 yr)  
   first obs. used      1955-06-22  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42103  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:31:51  

Additional Information
 Earth MOID = .859787 au 
 Jupiter MOID = 2.83546 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 12.7   n/a MPO395021  
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. 2019-August); 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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