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277370 (2005 US1)
Classification: Main-belt Asteroid          SPK-ID: 2277370
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2237258051413902 9.5123e-08  
a 2.648317524257656 1.2327e-08 au
q 2.055820553873058 2.5058e-07 au
i 1.3241695084374 8.2149e-06 deg
node 224.9816762237965 0.00022325 deg
peri 186.5633659518874 0.00022407 deg
M 128.5865488078369 1.4052e-05 deg
tp 2458438.227882486635
(2018-Nov-15.72788249)
6.0612e-05 TDB
period 1574.176802950906
4.31
1.0991e-05
3.009e-08
d
yr
n .2286909572832953 1.5967e-09 deg/d
Q 3.240814494642253 1.5085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      10024 days (27.44 yr)  
   first obs. used      1992-11-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6361  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 16:26:19  

Additional Information
 Earth MOID = 1.06668 au 
 Jupiter MOID = 2.13855 au 
 T_jup = 3.355 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457083.5 (2015-Mar-02.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2218161119362265 9.4412e-08  
q 2.063042865787633 2.4802e-07 au
tp 2456863.884088643745
(2014-Jul-25.38408864)
6.1335e-05 TDB
node 225.1477511905254 0.00022405 deg
peri 186.7394159151866 0.00022489 deg
i 1.320341511147574 8.2024e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      10024 days (27.44 yr)  
   first obs. used      1992-11-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6361  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 16:26:19  

Additional Information
 Jupiter MOID = 2.13855 au 
 T_jup = 3.355 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.913653516507969E-15 -2.339866684563043E-14 -3.318777833398732E-12 3.714615597763558E-14 -1.283082926025032E-12 -8.056867245919705E-17
q -2.339866684563043E-14 6.151192027671274E-14 8.745491539327375E-12 -9.724527358815431E-14 3.37711086580942E-12 2.026605678530843E-16
tp -3.318777833398732E-12 8.745491539327375E-12 3.76197899359665E-9 -1.1669520969189E-11 1.194005664975649E-9 -1.261048089289183E-12
node 3.714615597763558E-14 -9.724527358815431E-14 -1.1669520969189E-11 5.019812410421015E-8 -5.018839493925992E-8 -3.429025714584423E-10
peri -1.283082926025032E-12 3.37711086580942E-12 1.194005664975649E-9 -5.018839493925992E-8 5.057587034523894E-8 3.424587691187984E-10
i -8.056867245919705E-17 2.026605678530843E-16 -1.261048089289183E-12 -3.429025714584423E-10 3.424587691187984E-10 6.727866950288341E-11

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 17.2   n/a MPO470934  

277370 (2005 US1)          Discovered 2005-Oct-22 by Healy, D. at Junk Bond
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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