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JPL Small-Body Database Browser
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27231 (1999 JM57)
Classification: Main-belt Asteroid          SPK-ID: 2027231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2637529601725851 4.1535e-08  
a 3.094043831422304 1.6731e-08 au
q 2.277980611980944 1.289e-07 au
i 14.13305609591517 4.9247e-06 deg
node 223.8631983403989 1.8069e-05 deg
peri 220.2618947236341 1.9927e-05 deg
M 21.01875164813637 7.4614e-06 deg
tp 2458484.437335266111
(2018-Dec-31.93733527)
4.1083e-05 TDB
period 1987.870640638383
5.44
1.6124e-05
4.415e-08
d
yr
n .1810983031996438 1.469e-09 deg/d
Q 3.910107050863664 2.1144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1508  
   data-arc span      15771 days (43.18 yr)  
   first obs. used      1976-03-07  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47407  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:27:20  

Additional Information
 Earth MOID = 1.31223 au 
 Jupiter MOID = 1.52052 au 
 T_jup = 3.124 
[ 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 12.7   n/a MPO324560  
diameter diameter 8.014 km 0.675 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27231 (1999 JM57)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JM57 = 1976 EO = 1985 VV1 = 1996 VU30 = 1998 FZ98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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