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216854 (2007 XX9)
Classification: Inner Main-belt Asteroid          SPK-ID: 2216854
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1032441972426103 6.5014e-08  
a 1.950948943233553 1.2183e-08 au
q 1.749524785728086 1.2655e-07 au
i 23.76595484419132 8.191e-06 deg
node 84.65204113483352 1.7807e-05 deg
peri 259.1825073473147 4.6447e-05 deg
M 3.384013934121015 4.6066e-05 deg
tp 2459191.143855412245
(2020-Dec-07.64385541)
0.00012735 TDB
period 995.3304321918226
2.73
9.3234e-06
2.553e-08
d
yr
n .361688930988719 3.388e-09 deg/d
Q 2.152373100739021 1.3441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      392  
   data-arc span      7615 days (20.85 yr)  
   first obs. used      1998-04-28  
   last obs. used      2019-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57663  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:33  

Additional Information
 Earth MOID = .834972 au 
 Jupiter MOID = 3.14118 au 
 T_jup = 3.782 
[ 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 16.7   n/a MPO470329  

216854 (2007 XX9)          Discovered 2007-Dec-05 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

Alternate Designations
 2007 XX9 = 2000 BL23 = 2006 GF52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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