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JPL Small-Body Database Browser
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49965 (1999 XA231)
Classification: Main-belt Asteroid          SPK-ID: 2049965
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776423702344781 4.7943e-08  
a 2.669251376302086 1.6197e-08 au
q 2.19507923506414 1.2793e-07 au
i 14.28500668695708 5.4254e-06 deg
node 39.6730353788118 1.6926e-05 deg
peri 339.3975189943322 2.0898e-05 deg
M 252.8327449393169 1.5632e-05 deg
tp 2459074.678923201174
(2020-Aug-13.17892320)
7.1693e-05 TDB
period 1592.878461389739
4.36
1.4499e-05
3.97e-08
d
yr
n .2260059437842551 2.0571e-09 deg/d
Q 3.143423517540031 1.9075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1515  
   data-arc span      7640 days (20.92 yr)  
   first obs. used      1998-09-27  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46381  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:17:29  

Additional Information
 Earth MOID = 1.20351 au 
 Jupiter MOID = 2.31718 au 
 T_jup = 3.315 
[ 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 12.9   n/a MPO302341  
diameter diameter 7.021 km 0.385 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.188   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49965 (1999 XA231)          Discovered 1999-Dec-07 by CSS at Catalina
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XA231 = 1985 VW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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