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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02858932101616895 5.0342e-08  
a 2.831001639008539 1.7125e-08 au
q 2.750065224353623 1.4547e-07 au
i 1.083432744865042 4.5407e-06 deg
node 303.2560362961635 0.000252 deg
peri 215.8425820897904 0.00026582 deg
M 311.3900936511164 8.5098e-05 deg
tp 2457835.425895868352
(2017-Mar-22.92589587)
0.00041146 JED
period 1739.837182684658
4.76
1.5787e-05
4.322e-08
d
yr
n .2069159135020332 1.8775e-09 deg/d
Q 2.911938053663454 1.7615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1408  
   data-arc span      9858 days (26.99 yr)  
   first obs. used      1989-04-01  
   last obs. used      2016-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54162  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:58:54  

Additional Information
 Earth MOID = 1.75719 au 
 Jupiter MOID = 2.06167 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. 2016-February); 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. (2016) 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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