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13530 Ninnemann (1991 RS2)
Classification: Main-belt Asteroid          SPK-ID: 2013530
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06508389050443557 3.1514e-08  
a 2.305956972879728 7.2214e-09 au
q 2.155876321748884 7.4185e-08 au
i 6.48172316939467 3.8625e-06 deg
node 210.0655265732039 2.9329e-05 deg
peri 243.8059125165184 4.3899e-05 deg
M 345.9468317142773 3.3995e-05 deg
tp 2459050.428322208220
(2020-Jul-19.92832221)
0.00012082 TDB
period 1279.013787461723
3.50
6.0081e-06
1.645e-08
d
yr
n .281466864180128 1.3222e-09 deg/d
Q 2.456037624010572 7.6914e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1945  
   data-arc span      10645 days (29.14 yr)  
   first obs. used      1991-09-09  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48604  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:45:46  

Additional Information
 Earth MOID = 1.18125 au 
 Jupiter MOID = 2.65642 au 
 T_jup = 3.577 
[ 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 13.8   n/a MPO452361  
diameter diameter 4.788 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.719767 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.280   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13530 Ninnemann           Discovered 1991 Sept. 9 by L. D. Schmadel and F. Börngen at Tautenburg.
Olaf Ninnemann (b. 1947), German mathematician and leading expert in the field of information and documentation, is especially interested in number theory. He played a key role in the establishment of the Zentralblatt für Mathematik and has been its executive editor since 1978.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1991 RS2 = 1997 JX16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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