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357 Ninina (A893 CB)
Classification: Main-belt Asteroid          SPK-ID: 2000357
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07707521622157132 2.3201e-08  
a 3.152019764556664 1.0303e-08 au
q 2.909077159668793 6.9117e-08 au
i 15.055378251535 1.1726e-06 deg
node 137.6436777312776 3.6772e-06 deg
peri 255.4896818303964 8.6566e-06 deg
M 99.56180630101414 7.9944e-06 deg
tp 2458831.208973631903
(2019-Dec-13.70897363)
4.4843e-05 TDB
period 2044.004393383952
5.60
1.0022e-05
2.744e-08
d
yr
n .1761248660547162 8.6354e-10 deg/d
Q 3.394962369444535 1.1097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3590  
   data-arc span      46864 days (128.31 yr)  
   first obs. used      1893-02-15  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:56:21  

Additional Information
 Earth MOID = 1.95628 au 
 Jupiter MOID = 1.97934 au 
 T_jup = 3.150 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.86   n/a MPCxxxxx IRAS observations used: 14
diameter diameter 124.107 km 0.857 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 36.0105 h n/a LCDB (Rev. 2020-October); 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:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J. (2014) Minor Planet Bull. 41, 276-281.]
geometric albedo albedo 0.037   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.715   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=6.40, mean=8.05, max.=9.45) deg.
U-B UB 0.350   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=6.40, mean=8.05, max.=9.45) deg.
Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

357 Ninina (A893 CB)          Discovered 1893-Feb-11 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A893 CB = 1972 BN = A907 SA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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