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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 ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02802043740220974 3.2651e-08  
a 3.135121276060461 1.2827e-08 au
q 3.047273806596273 9.9954e-08 au
i 1.930903871158431 3.9111e-06 deg
node 248.3570292764088 0.00010943 deg
peri 100.6916736643418 0.00012709 deg
M 92.90507251236912 6.536e-05 deg
tp 2457077.240802608912
(2015-Feb-23.74080261)
0.0003679 JED
period 2027.58908600725
5.55
1.2444e-05
3.407e-08
d
yr
n .1775507682914765 1.0897e-09 deg/d
Q 3.222968745524649 1.3187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1979  
   data-arc span      48222 days (132.02 yr)  
   first obs. used      1884-02-27  
   last obs. used      2016-03-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53851  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:22:50  

Additional Information
 Earth MOID = 2.03996 au 
 Jupiter MOID = 1.90385 au 
 T_jup = 3.211 
[ 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 8.8 mag n/a MPO358624  
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 LCDB (Rev. 2016-February); Warner et al., 2009 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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