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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 | 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 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07673548715162488 3.3029e-08  
a 3.151090543620166 1.1987e-08 au
q 2.909290075696594 1.0419e-07 au
i 15.05458406888471 3.4775e-06 deg
node 137.646614924368 1.4259e-05 deg
peri 255.3783792910307 2.7398e-05 deg
M 29.94000943912993 2.3404e-05 deg
tp 2458830.582080204608
(2019-Dec-13.08208020)
0.00013298 TDB
period 2043.1005959001
5.59
1.1658e-05
3.192e-08
d
yr
n .1762027776421846 1.0054e-09 deg/d
Q 3.392891011543738 1.2907e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2971  
   data-arc span      41045 days (112.38 yr)  
   first obs. used      1907-09-19  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:23  

Additional Information
 Earth MOID = 1.95706 au 
 Jupiter MOID = 1.98076 au 
 T_jup = 3.150 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455254.5 (2010-Feb-27.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0735276371750911 3.2487e-08  
q 2.920284984210693 1.0169e-07 au
tp 2454718.807869036865
(2008-Sep-09.30786904)
0.00014597 TDB
node 137.8805550705772 1.42e-05 deg
peri 251.1294173891058 2.8724e-05 deg
i 15.08435272858795 3.4839e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2971  
   data-arc span      41045 days (112.38 yr)  
   first obs. used      1907-09-19  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:23  

Additional Information
 Jupiter MOID = 1.98076 au 
 T_jup = 3.150 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.05540935864529E-15 -3.284497853544025E-15 -2.855606264854742E-14 2.008284976776863E-15 4.984206889214862E-15 3.077584531977196E-16
q -3.284497853544025E-15 1.034023905335104E-14 -2.965553815286057E-13 -5.552260299044246E-15 -7.737622220249411E-14 -3.160580641489211E-16
tp -2.855606264854742E-14 -2.965553815286057E-13 2.130636861615688E-8 9.843320240122734E-12 3.667540413322357E-9 2.803695302118766E-12
node 2.008284976776863E-15 -5.552260299044246E-15 9.843320240122734E-12 2.016388196852789E-10 -1.923984249110395E-10 -4.620114660277647E-13
peri 4.984206889214862E-15 -7.737622220249411E-14 3.667540413322357E-9 -1.923984249110395E-10 8.250643063962209E-10 1.013325155738946E-12
i 3.077584531977196E-16 -3.160580641489211E-16 2.803695302118766E-12 -4.620114660277647E-13 1.013325155738946E-12 1.213757909609739E-11

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 8.8   n/a MPO502156 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. 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:
[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

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