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213108 (1999 XY144)
Classification: Outer Main-belt Asteroid          SPK-ID: 2213108
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08673345807709477 6.0688e-08  
a 3.47339184480881 3.8505e-08 au
q 3.172132558851763 2.0933e-07 au
i 8.854260616499412 5.937e-06 deg
node 231.1542093934292 3.7051e-05 deg
peri 157.5978295459189 4.9895e-05 deg
M 108.2261542466946 3.4723e-05 deg
tp 2458489.681335585994
(2019-Jan-06.18133559)
0.00022223 TDB
period 2364.444352385897
6.47
3.9317e-05
1.076e-07
d
yr
n .1522556450257473 2.5318e-09 deg/d
Q 3.774651130765859 4.1844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      422  
   data-arc span      7853 days (21.50 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:39:16  

Additional Information
 Earth MOID = 2.17884 au 
 Jupiter MOID = 1.65152 au 
 T_jup = 3.107 
[ 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 14.81   n/a MPCxxxxx  

213108 (1999 XY144)          Discovered 1999-Dec-07 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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