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364 Isara (A893 FE)
Classification: Main-belt Asteroid          SPK-ID: 2000364
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 73 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1486286316671377 3.6121e-08  
a 2.221434869778155 4.9726e-09 au
q 1.891266044745362 8.1025e-08 au
i 6.004833810053953 3.9075e-06 deg
node 105.5280761124368 3.5876e-05 deg
peri 312.9179275731905 3.797e-05 deg
M 259.897932812311 1.3061e-05 deg
tp 2459336.770948779306
(2021-May-02.27094878)
4.406e-05 TDB
period 1209.341075180496
3.31
4.0606e-06
1.112e-08
d
yr
n .2976827690618788 9.9954e-10 deg/d
Q 2.551603694810948 5.7117e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2829  
   data-arc span      43925 days (120.26 yr)  
   first obs. used      1900-04-29  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46665  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:14:57  

Additional Information
 Earth MOID = .909848 au 
 Jupiter MOID = 2.75752 au 
 T_jup = 3.628 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456151.5 (2012-Aug-12.0) TDB
Reference: JPL 73 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1491868698103834 3.6251e-08  
q 1.889402503448502 8.1391e-08 au
tp 2455709.686237299706
(2011-May-28.18623730)
4.3264e-05 TDB
node 105.5742253327256 3.5888e-05 deg
peri 312.7581411068296 3.7947e-05 deg
i 6.004441350217141 3.9078e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2829  
   data-arc span      43925 days (120.26 yr)  
   first obs. used      1900-04-29  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46665  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:14:57  

Additional Information
 Jupiter MOID = 2.75752 au 
 T_jup = 3.628 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.314106001572595E-15 -2.946735547728339E-15 8.10934548246777E-14 3.09996421248765E-15 9.121092527690758E-15 2.334442397271428E-16
q -2.946735547728339E-15 6.62455539528675E-15 -1.978446656689596E-13 -6.750649830933315E-15 -2.458538587130866E-14 -4.805200712524111E-16
tp 8.10934548246777E-14 -1.978446656689596E-13 1.871760504903013E-9 1.656057295681803E-12 5.461246029006756E-10 -7.345399226063208E-13
node 3.09996421248765E-15 -6.750649830933315E-15 1.656057295681803E-12 1.287933999461728E-9 -1.279715669194309E-9 -1.257442357101294E-11
peri 9.121092527690758E-15 -2.458538587130866E-14 5.461246029006756E-10 -1.279715669194309E-9 1.439947000985494E-9 1.228602896539742E-11
i 2.334442397271428E-16 -4.805200712524111E-16 -7.345399226063208E-13 -1.257442357101294E-11 1.228602896539742E-11 1.527054368406016E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.9   n/a MPO492753 IRAS observations used: 15
diameter diameter 25.901 km 0.665 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.156 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Yang, X.-y.; Zhang, Y.-y.; Li, X.-q. (1965) Acta Astron. Sin. 13, 66-74.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.300   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.912   0.069 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=17.26, mean=21.88, max.=26.49) deg.
U-B UB 0.538   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=17.26, mean=21.88, max.=26.49) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

364 Isara (A893 FE)          Discovered 1893-Mar-19 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A893 FE = 1976 AB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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