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JPL Small-Body Database Browser
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49795 (1999 XJ32)
Classification: Main-belt Asteroid          SPK-ID: 2049795
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542811464089564 3.6001e-08  
a 2.288705705929938 8.6742e-09 au
q 1.935601565826348 8.305e-08 au
i 3.759856566418017 4.8024e-06 deg
node 150.1073201614073 5.2259e-05 deg
peri 323.35407773 5.4653e-05 deg
M 207.6370152667775 1.6632e-05 deg
tp 2459135.754498979712
(2020-Oct-13.25449898)
6.0126e-05 TDB
period 1264.687876586866
3.46
7.1898e-06
1.968e-08
d
yr
n .2846552154604077 1.6183e-09 deg/d
Q 2.641809846033529 1.0012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1214  
   data-arc span      12399 days (33.95 yr)  
   first obs. used      1985-12-15  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:23:56  

Additional Information
 Earth MOID = .953814 au 
 Jupiter MOID = 2.45526 au 
 T_jup = 3.581 
[ 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 15.1   n/a MPO302341  
diameter diameter 5.881 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.938 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.038   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49795 (1999 XJ32)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XJ32 = 1985 XC = 1991 PU27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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