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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670175635347846 3.7023e-08  
a 2.450877907050321 1.084e-08 au
q 2.041538250493544 9.0736e-08 au
i 1.817160074931389 5.1494e-06 deg
node 148.6849726584692 0.00015838 deg
peri 147.4006350542291 0.00015947 deg
M 102.7095168277674 1.968e-05 deg
tp 2457000.657340214127
(2014-Dec-09.15734021)
7.5741e-05 JED
period 1401.460760099684
3.84
9.2982e-06
2.546e-08
d
yr
n .2568748339228518 1.7043e-09 deg/d
Q 2.860217563607098 1.2651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1799  
   data-arc span      30217 days (82.73 yr)  
   first obs. used      1933-03-22  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49776  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:43:05  

Additional Information
 Earth MOID = 1.02409 au 
 Jupiter MOID = 2.32544 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. 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:
[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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