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JPL Small-Body Database Browser
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49931 (1999 XL177)
Classification: Main-belt Asteroid          SPK-ID: 2049931
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05292573214079208 2.9019e-08  
a 2.383403192080563 1.0193e-08 au
q 2.257259833152998 6.837e-08 au
i 3.156628184840789 4.6568e-06 deg
node 335.782349170269 7.0644e-05 deg
peri 118.8290201248131 9.2041e-05 deg
M 98.58792763859556 5.7186e-05 deg
tp 2458232.442273845746
(2018-Apr-23.94227385)
0.00021326 TDB
period 1343.985867126184
3.68
8.6215e-06
2.36e-08
d
yr
n .2678599595468814 1.7183e-09 deg/d
Q 2.509546551008128 1.0732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1134  
   data-arc span      7563 days (20.71 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51301  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:41:41  

Additional Information
 Earth MOID = 1.27614 au 
 Jupiter MOID = 2.56267 au 
 T_jup = 3.533 
[ 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 15.4   n/a MPO324757  

49931 (1999 XL177)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XL177 = 2001 KB26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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