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12871 Samarasinha (1998 ML37)
Classification: Main-belt Asteroid          SPK-ID: 2012871
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1716944880693936 3.1789e-08  
a 2.27039264500573 5.835e-09 au
q 1.880578742104955 7.2381e-08 au
i 5.322801086390833 3.197e-06 deg
node 112.5978781986061 3.7933e-05 deg
peri 296.7419903085591 3.9137e-05 deg
M 56.37427768038536 8.8296e-06 deg
tp 2458804.828140024163
(2019-Nov-17.32814002)
3.0703e-05 TDB
period 1249.539195706816
3.42
4.817e-06
1.319e-08
d
yr
n .2881062084622018 1.1107e-09 deg/d
Q 2.660206547906505 6.8368e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1986  
   data-arc span      17726 days (48.53 yr)  
   first obs. used      1971-10-22  
   last obs. used      2020-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45148  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:50:03  

Additional Information
 Earth MOID = .898266 au 
 Jupiter MOID = 2.70958 au 
 T_jup = 3.588 
[ 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 14.1   n/a MPO344406  
diameter diameter 3.643 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.367   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12871 Samarasinha           Discovered 1998 June 24 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Beginning with his demonstration of the excited rotational state of 1P/Halley, Nalin H. Samarasinha (b. 1958), of the National Optical Astronomy Observatories, Tucson, has carried out many studies of the dynamical evolution of cometary nuclei and the related dynamical processes of dust in cometary comae.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 ML37 = 1971 UX3 = 1988 SQ3 = 1993 BS2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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