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343 Ostara (A892 VA)
Classification: Main-belt Asteroid          SPK-ID: 2000343
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2291772208459374 2.6704e-08  
a 2.411900325748716 5.5229e-09 au
q 1.859147712136214 6.533e-08 au
i 3.259185942880523 3.2922e-06 deg
node 38.59011092061817 6.5334e-05 deg
peri 10.28268377351734 6.5876e-05 deg
M 24.08483161660803 8.786e-06 deg
tp 2458908.966814922147
(2020-Feb-29.46681492)
3.3318e-05 TDB
period 1368.1618021072
3.75
4.6993e-06
1.287e-08
d
yr
n .2631267730509208 9.0378e-10 deg/d
Q 2.964652939361218 6.7886e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2948  
   data-arc span      46725 days (127.93 yr)  
   first obs. used      1892-11-15  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:30:40  

Additional Information
 Earth MOID = .869438 au 
 Jupiter MOID = 2.4269 au 
 T_jup = 3.481 
[ 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 11.7   n/a MPO502156 IRAS observations used: 5
diameter diameter 18.213 km 0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 109.87 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2009) Minor Planet Bull. 36, 59-62.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.092   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.770   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.66, mean=7.55, max.=8.45) deg.
U-B UB 0.463   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.66, mean=7.55, max.=8.45) deg.
Tholen spectral type spec_T CSGU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

343 Ostara (A892 VA)          Discovered 1892-Nov-15 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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