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JPL Small-Body Database Browser
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215157 (1999 XY251)
Classification: Main-belt Asteroid          SPK-ID: 2215157
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2272272623011382 7.5173e-08  
a 2.407737351294399 2.1175e-08 au
q 1.860633784619579 1.7245e-07 au
i 3.294063485709973 6.2178e-06 deg
node 213.3298697173946 0.00010669 deg
peri 155.3557340920729 0.00010788 deg
M 105.6582357983427 2.2031e-05 deg
tp 2458199.990385528445
(2018-Mar-22.49038553)
7.9633e-05 TDB
period 1364.62113076491
3.74
1.8002e-05
4.929e-08
d
yr
n .263809486665511 3.4801e-09 deg/d
Q 2.954840917969219 2.5986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      6997 days (19.16 yr)  
   first obs. used      1999-12-09  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58491  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:40:08  

Additional Information
 Earth MOID = .859769 au 
 Jupiter MOID = 2.51105 au 
 T_jup = 3.484 
[ 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 17.3   n/a MPO413070  

215157 (1999 XY251)          Discovered 1999-Dec-09 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

Alternate Designations
 1999 XY251 = 2006 MR8 = 2008 CQ63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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