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183 Istria
Classification: Main-belt Asteroid          SPK-ID: 2000183
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3510396957097616 3.8428e-08  
a 2.790711548250251 1.2339e-08 au
q 1.811061015538765 1.0723e-07 au
i 26.39284330089455 5.2937e-06 deg
node 141.9515300689913 1.1885e-05 deg
peri 264.177636836127 1.3425e-05 deg
M 252.4555882147384 7.7081e-06 deg
tp 2457909.193512436860
(2017-Jun-04.69351244)
3.7999e-05 JED
period 1702.828268222175
4.66
1.1293e-05
3.092e-08
d
yr
n .2114129808144747 1.4021e-09 deg/d
Q 3.770362080961737 1.667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1351  
   data-arc span      40039 days (109.62 yr)  
   first obs. used      1906-02-22  
   last obs. used      2015-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50555  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 15:47:44  

Additional Information
 Earth MOID = 1.00753 au 
 Jupiter MOID = 2.43471 au 
 T_jup = 3.093 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.68 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
diameter diameter 35.43 km 2.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
rotation period rot_per 11.77 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1890   0.034 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
B-V BV .842 mag .046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=3.18, mean=3.66, max.=4.14) deg.
U-B UB .359 mag .032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=3.18, mean=3.66, max.=4.14) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B S   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)

183 Istria          Discovered 1878-Feb-08 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1948 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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