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30 Urania
Classification: Main-belt Asteroid          SPK-ID: 2000030
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 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267507800102774 2.6592e-08  
a 2.36571975223516 3.2912e-09 AU
q 2.065862928353634 6.243e-08 AU
i 2.098030466320397 3.1552e-06 deg
node 307.6332272052753 8.5224e-05 deg
peri 86.71858509120879 8.6516e-05 deg
M 316.2946747086586 1.2364e-05 deg
tp 2457161.852324735169
(2015-May-19.35232474)
4.5727e-05 JED
period 1329.056276722614
3.64
2.7735e-06
7.593e-09
d
yr
n .2708688911862648 5.6526e-10 deg/d
Q 2.665576576116687 3.7084e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2532  
   data-arc span      56396 days (154.40 yr)  
   first obs. used      1860-02-22  
   last obs. used      2014-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53015  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:50:53  

Additional Information
 Earth MOID = 1.07322 AU 
 T_jup = 3.536 
[ 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 7.57 mag n/a MPO263342  
diameter diameter 100.15 km 2.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
rotation period rot_per 13.686 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Bailey, S.J. (1913) Ann. Harvard Coll. Obs. 72, 165-189.]
[Rigollet, R. (1950) C. R. 230, 2077-2078.]
[Gehrels, T.; Owings, D. (1962) Astrophys. J. 135, 906-924.]
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Science XXVI, 1511-1512.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.1714   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
B-V BV .873 mag .022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=.70, mean=9.32, max.=24.88) deg.
U-B UB .459 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=.70, mean=9.32, max.=24.88) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sl   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)

30 Urania          Discovered 1854-Jul-22 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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