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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3513334953047698 3.8473e-08  
a 2.789950911049831 1.2401e-08 AU
q 1.809747705741967 1.0733e-07 AU
i 26.3926890774472 5.3573e-06 deg
node 141.9559080146373 1.1905e-05 deg
peri 264.2055365066748 1.3486e-05 deg
M 167.8289600846423 7.4955e-06 deg
tp 2456206.980373890437
(2012-Oct-06.48037389)
3.3952e-05 JED
period 1702.13213056537
4.66
1.1349e-05
3.107e-08
d
yr
n .2114994444528961 1.4102e-09 deg/d
Q 3.770154116357695 1.6758e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1313  
   data-arc span      39928 days (109.32 yr)  
   first obs. used      1906-02-22  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50534  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:33:44  

Additional Information
 Earth MOID = 1.00745 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-July); 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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