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77 Frigga
Classification: Main-belt Asteroid          SPK-ID: 2000077
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 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306794840210336 3.5296e-08  
a 2.669778541681131 7.3465e-09 AU
q 2.320893259403813 9.3787e-08 AU
i 2.429151390042604 3.62e-06 deg
node 1.279935759924784 9.5389e-05 deg
peri 60.80437046773135 9.6465e-05 deg
M 282.8537686549096 1.3543e-05 deg
tp 2457341.947155071211
(2015-Nov-15.44715507)
6.0419e-05 JED
period 1593.350364398051
4.36
6.5767e-06
1.801e-08
d
yr
n .2259390075427658 9.3259e-10 deg/d
Q 3.018663823958449 8.3066e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1694  
   data-arc span      49344 days (135.10 yr)  
   first obs. used      1879-07-18  
   last obs. used      2014-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58835  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:36  

Additional Information
 Earth MOID = 1.33458 AU 
 T_jup = 3.368 
[ 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 8.52 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
magnitude slope G 0.16   n/a PDS3 (MPC 17257) Fit
diameter diameter 69.25 km 2.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 9.012 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Lagerkvist, C.-I.; Rickman, H. (1982) Moon Planets 27, 107-110.]
[Zappala, V.; Scaltriti, F.; Di Martino, M. (1983) Icarus 56, 325-344.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Shevchenko, V.G.; Bel'skaya, I.N.; Krugly, Yu.N.; Chiorny, V.G.; Gaftonyuk, N.M. (2002) Icarus 155, 365-374.]
[Dunckel, P.B. (2011) Posting on CALL site. http://www.minorplanet.info/call.html]
[Warner, B.D. (2012) Minor Planet Bul. 39, 158-167.]
geometric albedo albedo 0.1440   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
B-V BV .746 mag .010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=1.41, mean=13.05, max.=20.15) deg.
U-B UB .249 mag .028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=6.66, mean=15.96, max.=20.15) deg.
Tholen spectral type spec_T MU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xe   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)

77 Frigga          Discovered 1862-Nov-12 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1936 SP 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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