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147 Protogeneia
Classification: Main-belt Asteroid          SPK-ID: 2000147
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02836138872509904 3.4689e-08  
a 3.136859293893866 1.4904e-08 AU
q 3.047893608083802 1.0718e-07 AU
i 1.930168038657574 4.215e-06 deg
node 248.3747343607814 0.00011974 deg
peri 101.5555702502869 0.0001384 deg
M 345.5501051934041 7.1448e-05 deg
tp 2457081.952265724887
(2015-Feb-28.45226573)
0.0004029 JED
period 2029.275372134507
5.56
1.4463e-05
3.96e-08
d
yr
n .1774032272521651 1.2643e-09 deg/d
Q 3.22582497970393 1.5327e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      47650 days (130.46 yr)  
   first obs. used      1884-02-27  
   last obs. used      2014-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57171  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:57  

Additional Information
 Earth MOID = 2.04208 AU 
 T_jup = 3.210 
[ 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 8.6 mag n/a MPO263343  
diameter diameter 132.93 km 5.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 7.8528 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Buchheim, R.K. (2005) Minor Planet Bul. 32, 35-36.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0492   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV .678 mag .023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=1.00, mean=2.06, max.=3.43) deg.
U-B UB .293 mag .028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=1.00, mean=2.22, max.=3.43) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

147 Protogeneia          Discovered 1875-Jul-10 by Schulhof, L. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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