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190908 (2001 US91)
Classification: Main-belt Asteroid          SPK-ID: 2190908
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05518485251193251 4.0412e-08  
a 2.399049432143836 1.4176e-08 au
q 2.266658243062143 1.0053e-07 au
i 6.76229648143259 4.7471e-06 deg
node 151.1795003840319 3.0368e-05 deg
peri 330.3720758132425 4.7936e-05 deg
M 338.7033678123547 3.9011e-05 deg
tp 2459280.790775266968
(2021-Mar-07.29077527)
0.0001473 TDB
period 1357.241785528726
3.72
1.203e-05
3.294e-08
d
yr
n .2652438230523226 2.351e-09 deg/d
Q 2.531440621225529 1.4959e-08 au
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      8036 days (22.00 yr)  
   first obs. used      1999-02-09  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:37  

Additional Information
 Earth MOID = 1.28431 au 
 Jupiter MOID = 2.48821 au 
 T_jup = 3.515 
[ 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 16.6   n/a MPO494055  

190908 (2001 US91)          Discovered 2001-Oct-18 by NEAT at Palomar
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

Alternate Designations
 2001 US91 = 2003 FZ70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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