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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1669887299618515 4.5842e-08  
a 2.451311470204595 1.2714e-08 AU
q 2.041970081054211 1.1437e-07 AU
i 1.817037905895265 6.2624e-06 deg
node 148.6819321232035 0.0001597 deg
peri 147.4849170034307 0.00016093 deg
M 359.9067806247197 2.0437e-05 deg
tp 2457000.862994345823
(2014-Dec-09.36299435)
7.9583e-05 JED
period 1401.832656605084
3.84
1.0906e-05
2.986e-08
d
yr
n .2568066868065672 1.998e-09 deg/d
Q 2.86065285935498 1.4837e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1523  
   data-arc span      29740 days (81.42 yr)  
   first obs. used      1933-03-22  
   last obs. used      2014-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50087  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:56:28  

Additional Information
 Earth MOID = 1.02752 AU 
 T_jup = 3.475 
[ 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 12.8 mag n/a MPO263366  
rotation period rot_per 32.88 h n/a LCDB (Rev. 2015-Feb); 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) (688)
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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