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49378 (1998 XU2)
Classification: Main-belt Asteroid          SPK-ID: 2049378
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1775747505663314 6.8872e-08  
a 2.672994495174783 3.1565e-08 AU
q 2.198338164428944 1.8337e-07 AU
i 12.08741041133914 8.6696e-06 deg
node 341.51451315292 3.1855e-05 deg
peri 39.61109900353635 4.0559e-05 deg
M 283.8909683280793 3.0324e-05 deg
tp 2457337.965374727284
(2015-Nov-11.46537473)
0.00013893 JED
period 1596.230200714054
4.37
2.8274e-05
7.741e-08
d
yr
n .2255313800221035 3.9949e-09 deg/d
Q 3.147650825920622 3.717e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      7597 days (20.80 yr)  
   first obs. used      1993-09-10  
   last obs. used      2014-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5881  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:34:33  

Additional Information
 Earth MOID = 1.2132 AU 
 T_jup = 3.326 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO259666  

49378 (1998 XU2)          Discovered 1998-Dec-07 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XU2 = 2000 EP91 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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