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JPL Small-Body Database Browser
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49807 (1999 XL39)
Classification: Main-belt Asteroid          SPK-ID: 2049807
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976764290935588 3.3967e-08  
a 2.350134503539274 9.6639e-09 au
q 1.885568306990067 7.9649e-08 au
i 3.900538912555841 4.9893e-06 deg
node 193.1019930397464 5.4056e-05 deg
peri 310.1926965458838 5.5537e-05 deg
M 87.5764021643859 1.2813e-05 deg
tp 2458280.373148347315
(2018-Jun-10.87314835)
4.6286e-05 TDB
period 1315.944292603433
3.60
8.1168e-06
2.222e-08
d
yr
n .2735678113606044 1.6874e-09 deg/d
Q 2.814700700088482 1.1574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      8198 days (22.44 yr)  
   first obs. used      1995-09-18  
   last obs. used      2018-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54123  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-05 18:50:43  

Additional Information
 Earth MOID = .901122 au 
 Jupiter MOID = 2.21455 au 
 T_jup = 3.529 
[ 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 15.4   n/a MPO436131  

49807 (1999 XL39)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XL39 = 1997 BM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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