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147 Protogeneia (A875 NA)
Classification: Main-belt Asteroid          SPK-ID: 2000147
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02315711828340724 1.428e-08  
a 3.134373648845374 9.7727e-09 au
q 3.061790587514667 4.234e-08 au
i 1.933340662372025 1.0762e-06 deg
node 248.2520945759299 3.5835e-05 deg
peri 101.1945609998207 6.2713e-05 deg
M 50.98183332185893 5.5138e-05 deg
tp 2459109.463235425130
(2020-Sep-16.96323543)
0.00031084 TDB
period 2026.863855495134
5.55
9.4794e-06
2.595e-08
d
yr
n .1776142975878649 8.3068e-10 deg/d
Q 3.206956710176081 9.999e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3716  
   data-arc span      53246 days (145.78 yr)  
   first obs. used      1875-09-25  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42261  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:16:06  

Additional Information
 Earth MOID = 2.05437 au 
 Jupiter MOID = 1.89101 au 
 T_jup = 3.211 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.80   n/a E2021B10  
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. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Buchheim, R.K. (2005) Minor Planet Bull. 32, 35-36.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.0492   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV 0.678   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=1.00, mean=2.06, max.=3.43) deg.
U-B UB 0.293   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A875 NA)          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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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