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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02368395210878288 3.2016e-08  
a 3.135853548154724 1.0727e-08 au
q 3.061584142900071 9.9064e-08 au
i 1.933266175061627 3.3368e-06 deg
node 248.2655837503424 0.00010576 deg
peri 100.5353440177132 0.00012716 deg
M 341.2733661817797 7.0161e-05 deg
tp 2459106.008950300029
(2020-Sep-13.50895030)
0.00039528 TDB
period 2028.299505224161
5.55
1.0408e-05
2.85e-08
d
yr
n .177488580494533 9.1075e-10 deg/d
Q 3.210122953409377 1.0981e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3491  
   data-arc span      49931 days (136.70 yr)  
   first obs. used      1884-02-28  
   last obs. used      2020-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:51:21  

Additional Information
 Earth MOID = 2.05484 au 
 Jupiter MOID = 1.89262 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 8.7   n/a MPO435695  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1904-May-18 20:12 00:02 Jupiter 1.93722892075192 1.93722861444598 1.93722922705786 3.7425426826502 3.62383188906588 2416619.341897347 1.68144406730499 84.8200651109029 12.319448909798 -88.8454740178583 5013609.11568807 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
1914-Oct-13 17:49 00:02 Jupiter 1.9968387569959 1.99683839342214 1.99683912056989 3.85022866199987 3.73843513951412 2420419.242263203 1.49584438142934 59.4952998553953 12.3471574000514 -80.6729716455792 5189784.26546343 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
1988-Jan-09 16:30 < 00:01 Jupiter 1.93762070266906 1.93762040021073 1.93762100512738 3.76401763759849 3.64603036467299 2447170.187724927 0.386406570525145 32.0609752622151 12.3369109219964 -88.5847535810344 5079091.44800451 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
1998-Jun-04 06:45 < 00:01 Jupiter 1.96584733040143 1.96584702481815 1.96584763598459 3.78940390618184 3.67394122496777 2450968.781360429 0.242111842735438 30.5770784198365 12.1188396284117 -83.7114557120282 5095540.01696568 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
2071-Sep-01 12:52 < 00:01 Jupiter 1.95353360257707 1.95353331275285 1.9535338924013 3.8058898846045 3.69020706375052 2477721.036177722 0.941289146278571 43.2755990633768 11.9465276930386 89.6569228008784 5287739.73951627 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
2082-Jan-26 10:08 00:01 Jupiter 1.94127352518488 1.94127321440569 1.94127383596407 3.75174853549521 3.63358925020825 2481520.922386013 1.11071979801262 59.4641137430872 12.2281897264326 -86.5781457791843 5008361.28127011 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
2155-Apr-24 00:57 00:02 Jupiter 1.99152814524235 1.99152778945535 1.99152850102959 3.86251339748364 3.75078445677975 2508270.539786184 2.21434411444019 64.8041898488533 12.6095664873687 81.1427224322115 5527171.478691 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
2165-Sep-20 02:17 00:02 Jupiter 1.93841211763877 1.93841181322904 1.93841242204851 3.77197400932872 3.65429247963581 2512072.594971178 2.4097248903921 112.01543091927 12.3549000546795 -89.2187374638039 5034648.259967 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
2176-Feb-14 09:54 00:03 Jupiter 1.98188725881127 1.98188686918962 1.98188764843394 3.8223594567361 3.70886347079761 2515871.912716499 2.56120413617466 110.933511754441 12.0074586651448 -83.5877670764374 5245112.44190962 T 56 CATAB v2.0f-lin.ifort 2020-Dec-18 01:51:30 2020-Dec-18 01:51
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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