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7380 (1981 RF)
Classification: Main-belt Asteroid          SPK-ID: 2007380
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1901904861786933 6.7428e-08  
a 2.430452359868162 1.3368e-08 AU
q 1.968203443910684 1.6758e-07 AU
i 3.418232933698439 5.9598e-06 deg
node 117.8622400556241 0.00010825 deg
peri 238.8495630750622 0.0001092 deg
M 274.7543274078836 1.6381e-05 deg
tp 2457328.216974613393
(2015-Nov-01.71697461)
6.4116e-05 JED
period 1383.977711400356
3.79
1.1419e-05
3.126e-08
d
yr
n .2601197960303419 2.1461e-09 deg/d
Q 2.892701275825641 1.5911e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      12409 days (33.97 yr)  
   first obs. used      1981-08-30  
   last obs. used      2015-08-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .524  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:21:54  

Additional Information
 Earth MOID = .966632 AU 
 T_jup = 3.480 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO319177  
rotation period rot_per 4.37 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]

7380 (1981 RF)          Discovered 1981-Sep-03 by Thomas, N. G. at Anderson Mesa
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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