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277442 (2005 US454)
Classification: Main-belt Asteroid          SPK-ID: 2277442
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108648602023941 8.7663e-08  
a 2.389918760490706 1.5254e-08 au
q 2.124960751213825 2.1134e-07 au
i 6.275449555697057 9.51e-06 deg
node 161.0507029033393 6.4228e-05 deg
peri 238.3238099007143 7.3996e-05 deg
M 334.6030344941451 3.6087e-05 deg
tp 2459095.703400920442
(2020-Sep-03.20340092)
0.00013557 TDB
period 1349.500763130846
3.69
1.292e-05
3.537e-08
d
yr
n .2667653178385752 2.5539e-09 deg/d
Q 2.654876769767587 1.6945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      8533 days (23.36 yr)  
   first obs. used      1994-12-01  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63659  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:29:02  

Additional Information
 Earth MOID = 1.13962 au 
 Jupiter MOID = 2.72572 au 
 T_jup = 3.516 
[ 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 17.1   n/a MPO437263  

277442 (2005 US454)          Discovered 2005-Oct-28 by CSS at Catalina
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 US454 = 1994 XY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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