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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 
[ 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 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1943-Feb-21 14:33 < 00:01 Hygie 0.0467066896737017 0.046701717558714 0.046711661846334 6.0084098055698 6.00840966789204 2430777.106458746 0.541000042704159 261.029984432427 27.3087827478281 18.4681354702422 84860.3333291468 T 53 CATAB v2.0f-lin.ifort 2020-Feb-22 15:25:40 2020-Feb-22 15:25
1987-Oct-10 12:17 < 00:01 Hygie 0.0338182113199929 0.0338162853315706 0.0338201373088363 6.02487072451207 6.02487053488337 2447079.012113119 0.335506615193246 96.1623368739662 27.3313357081635 -3.83672379796523 53889.0822462419 T 53 CATAB v2.0f-lin.ifort 2020-Feb-22 15:25:40 2020-Feb-22 15:25
2073-Sep-28 01:45 00:04 Juno 0.0429866851561285 0.0429823896375285 0.0429909806760133 2.69762745058078 2.69762734566759 2478478.573021586 3.71926455540885 214.061811233614 22.3462586047376 3.15335327255654 33842.0346136469 T 53 CATAB v2.0f-lin.ifort 2020-Feb-22 15:25:40 2020-Feb-22 15:25
2117-Oct-13 19:53 < 00:01 David 0.0200192895738554 0.0200133682763327 0.0200252129887154 3.32342765224472 3.32342742518078 2494564.328543545 0.966168953330081 440.233200771668 37.2075397789076 -48.1661595395672 60063.506363738 T 53 CATAB v2.0f-lin.ifort 2020-Feb-22 15:25:40 2020-Feb-22 15:25

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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