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7340 (1991 UA2)
Classification: Main-belt Asteroid          SPK-ID: 2007340
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02854018170616703 5.1878e-08  
a 2.83122871056035 1.7628e-08 au
q 2.75042492870924 1.4911e-07 au
i 1.08336719445371 4.7058e-06 deg
node 303.2593488860862 0.00025732 deg
peri 215.6241716593962 0.00027095 deg
M 270.2154313268508 8.528e-05 deg
tp 2457834.470348888957
(2017-Mar-21.97034889)
0.00041257 JED
period 1740.046512544489
4.76
1.6251e-05
4.449e-08
d
yr
n .2068910212483735 1.9323e-09 deg/d
Q 2.912032492411459 1.8131e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1347  
   data-arc span      9756 days (26.71 yr)  
   first obs. used      1989-04-01  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54077  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:03:25  

Additional Information
 Earth MOID = 1.75855 au 
 Jupiter MOID = 2.06162 au 
 T_jup = 3.312 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO263414  
rotation period rot_per 10.6967 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

7340 (1991 UA2)          Discovered 1991-Oct-29 by Ueda, S., Kaneda, H. at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 UA2 = 1993 BZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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