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286 Iclea (A889 PB)
Classification: Main-belt Asteroid          SPK-ID: 2000286
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02705903472691824 3.6755e-08  
a 3.199931694087463 1.3609e-08 au
q 3.113344631253384 1.2095e-07 au
i 17.91515144366013 4.0849e-06 deg
node 148.9574012458602 1.2507e-05 deg
peri 209.0700672479401 7.6868e-05 deg
M 295.471111360567 7.6754e-05 deg
tp 2459375.266854382323
(2021-Jun-09.76685438)
0.0004462 TDB
period 2090.7855446187
5.72
1.3338e-05
3.652e-08
d
yr
n .1721840869459683 1.0984e-09 deg/d
Q 3.286518756921541 1.3977e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3208  
   data-arc span      44813 days (122.69 yr)  
   first obs. used      1898-02-18  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4108  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:19  

Additional Information
 Earth MOID = 2.11098 au 
 Jupiter MOID = 1.88094 au 
 T_jup = 3.118 
[ 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 9.0   n/a MPO347512  
diameter diameter 94.30 km 2.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
rotation period rot_per 15.365 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Cooney, W.R.; Pravec, P. (2002) Minor Planet Bull. 29, 48-49.]
[Marciniak, A.; Pilcher, F.; Santana-Ros, T.; Oszkiewicz; Kankiewicz, P. (2014) ACM 2014, Poster 57.]
geometric albedo albedo 0.0508   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 13
B-V BV 0.690   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.72 deg.
U-B UB 0.328   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.72 deg.
Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

286 Iclea (A889 PB)          Discovered 1889-Aug-03 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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