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277371 (2005 UJ9)
Classification: Mars-crossing Asteroid          SPK-ID: 2277371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .246333558070384 4.7002e-08  
a 2.195415171872277 9.8643e-09 au
q 1.654610741143275 1.0168e-07 au
i 6.1426839572758 5.992e-06 deg
node 171.429674626725 5.1254e-05 deg
peri 151.7704683475657 5.3101e-05 deg
M 217.488937551371 1.5777e-05 deg
tp 2459470.848210128967
(2021-Sep-13.34821013)
5.3367e-05 TDB
period 1188.15587181146
3.25
8.0078e-06
2.192e-08
d
yr
n .3029905490860763 2.0421e-09 deg/d
Q 2.736219602601278 1.2294e-08 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      5235 days (14.33 yr)  
   first obs. used      2005-09-23  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55169  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 14:11:25  

Additional Information
 Earth MOID = .645831 au 
 Jupiter MOID = 2.61587 au 
 T_jup = 3.622 
[ 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 MPO455058  

277371 (2005 UJ9)          Discovered 2005-Oct-21 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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