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102909 (1999 XR19)
Classification: Main-belt Asteroid          SPK-ID: 2102909
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1328589889659814 3.6269e-08  
a 2.294434029530548 5.9774e-09 au
q 1.989597844117976 8.2685e-08 au
i 7.929996612421204 4.2821e-06 deg
node 31.91725392288915 2.013e-05 deg
peri 325.5137403600861 2.4729e-05 deg
M 50.70024183996927 1.425e-05 deg
tp 2459021.719840734670
(2020-Jun-21.21984073)		 5.01e-05 TDB
period 1269.438862612685
3.48		 4.9607e-06
1.358e-08		 d
yr
n .2835898684077381 1.1082e-09 deg/d
Q 2.599270214943119 6.7716e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1217  
   data-arc span      8307 days (22.74 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49181  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:32:44  

Additional Information
 Earth MOID = .990586 au 
 Jupiter MOID = 2.85628 au 
 T_jup = 3.572 
[ 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 15.64   n/a E2021B55  

102909 (1999 XR19)          Discovered 1999-Dec-05 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XR19 = 1998 HN77 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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