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344128 (1999 XR49)
Classification: Main-belt Asteroid          SPK-ID: 2344128
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2170520077210639 7.7776e-08  
a 2.653910027049937 1.8119e-08 au
q 2.077873527367685 2.0799e-07 au
i 5.856008439333136 8.0268e-06 deg
node 255.8339691359542 7.9395e-05 deg
peri 149.0287215760664 8.1183e-05 deg
M 281.5079963531052 1.812e-05 deg
tp 2459344.810791271318
(2021-May-10.31079127)
8.1441e-05 TDB
period 1579.165763372359
4.32
1.6172e-05
4.428e-08
d
yr
n .2279684681304187 2.3346e-09 deg/d
Q 3.229946526732189 2.2051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      7139 days (19.55 yr)  
   first obs. used      1999-11-14  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60203  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:29:16  

Additional Information
 Earth MOID = 1.09002 au 
 Jupiter MOID = 2.17957 au 
 T_jup = 3.348 
[ 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 17.0   n/a MPO437458  

344128 (1999 XR49)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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