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2316 Jo-Ann (1980 RH)
Classification: Main-belt Asteroid          SPK-ID: 2002316
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670777189091068 3.5698e-08  
a 2.450593831343141 1.0584e-08 au
q 2.041154204029601 8.6963e-08 au
i 1.817154051880314 4.7617e-06 deg
node 148.6853381872366 0.00015671 deg
peri 147.3591249079852 0.00015777 deg
M 154.1358206358545 1.9709e-05 deg
tp 2457000.561809254978
(2014-Dec-09.06180925)
7.5294e-05 JED
period 1401.217106946573
3.84
9.0778e-06
2.485e-08
d
yr
n .2569195010646744 1.6645e-09 deg/d
Q 2.860033458656682 1.2353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1892  
   data-arc span      30321 days (83.01 yr)  
   first obs. used      1933-03-22  
   last obs. used      2016-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50078  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:38:48  

Additional Information
 Earth MOID = 1.02518 au 
 Jupiter MOID = 2.32675 au 
 T_jup = 3.476 
[ 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 12.9 mag n/a MPO350818  
rotation period rot_per 33.0 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:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2316 Jo-Ann (1980 RH)          Discovered 1980-Sep-02 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1980 RH = 1930 QU = 1933 FS = 1968 KS = 1971 DE = 1972 LV = 1975 FO = 1976 OD1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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