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49612 (1999 FA31)
Classification: Main-belt Asteroid          SPK-ID: 2049612
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09065824011826398 5.3776e-08  
a 3.15644076783565 2.7234e-08 au
q 2.870283402786128 1.6739e-07 au
i 23.60397967724753 6.6211e-06 deg
node 20.88965944897217 1.1498e-05 deg
peri 144.0033662902233 3.2081e-05 deg
M 235.9416169003545 2.9569e-05 deg
tp 2459306.359897337119
(2021-Apr-01.85989734)
0.00017087 TDB
period 2048.306262683258
5.61
2.651e-05
7.258e-08
d
yr
n .1757549671934333 2.2747e-09 deg/d
Q 3.442598132885172 2.9703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      8463 days (23.17 yr)  
   first obs. used      1996-10-05  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56398  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:22:27  

Additional Information
 Earth MOID = 1.89638 au 
 Jupiter MOID = 1.55889 au 
 T_jup = 3.070 
[ 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 13.9   n/a MPO365830  
diameter diameter 9.488 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49612 (1999 FA31)          Discovered 1999-Mar-19 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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