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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304629480679722 3.4306e-08  
a 2.669310538401215 6.2945e-09 au
q 2.321064416252486 9.1389e-08 au
i 2.429182492394498 3.3823e-06 deg
node 1.279815897514006 9.2553e-05 deg
peri 60.93809505418857 9.3589e-05 deg
M 58.32729178618791 1.2671e-05 deg
tp 2457342.412845317203
(2015-Nov-15.91284532)
5.5846e-05 JED
period 1592.931419247013
4.36
5.6344e-06
1.543e-08
d
yr
n .2259984300957375 7.9939e-10 deg/d
Q 3.017556660549943 7.1157e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      49941 days (136.73 yr)  
   first obs. used      1879-07-18  
   last obs. used      2016-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56173  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:25:12  

Additional Information
 Earth MOID = 1.33354 au 
 Jupiter MOID = 2.28997 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 LCDB (Rev. 2016-February); Warner et al., 2009 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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