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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1662131221513184 2.7946e-08  
a 2.451814733024708 7.5628e-09 au
q 2.04429095131207 6.8986e-08 au
i 1.816995922892068 3.2446e-06 deg
node 148.6573609792514 0.0001176 deg
peri 147.3044041075905 0.00011817 deg
M 153.7166555235439 1.3311e-05 deg
tp 2458401.746136867100
(2018-Oct-10.24613687)
5.0759e-05 TDB
period 1402.26438048432
3.84
6.4881e-06
1.776e-08
d
yr
n .2567276221304728 1.1878e-09 deg/d
Q 2.859338514737345 8.8199e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2870  
   data-arc span      31727 days (86.86 yr)  
   first obs. used      1933-03-22  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47428  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:18:16  

Additional Information
 Earth MOID = 1.02864 au 
 Jupiter MOID = 2.33481 au 
 T_jup = 3.475 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO350818  
diameter diameter 12.950 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 33.0 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.065   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
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

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