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77 Frigga (A862 VA)
Classification: Main-belt Asteroid          SPK-ID: 2000077
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 92 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1327853332674153 1.5114e-08  
a 2.668848666636909 4.0261e-09 au
q 2.314464706997231 4.0912e-08 au
i 2.422894953914481 3.055e-07 deg
node 1.138056134419233 1.1195e-05 deg
peri 61.72205161719327 1.4045e-05 deg
M 103.4277778654648 5.7992e-06 deg
tp 2458938.970561568048
2.5788e-05 TDB
period 1592.517998885679
n .2260570996697683 5.1153e-10 deg/d
Q 3.023232626276588 4.5607e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3598  
   data-arc span      51838 days (141.92 yr)  
   first obs. used      1879-07-18  
   last obs. used      2021-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45325  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:30:20  

Additional Information
 Earth MOID = 1.32838 au 
 Jupiter MOID = 2.27837 au 
 T_jup = 3.368 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.67   n/a MPO614063 IRAS observations used: 12
magnitude slope G 0.16   n/a PDS3 (MPC 17257) Fit
diameter diameter 61.390 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 9.012 h n/a LCDB (Rev. 2020-October); 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.]
[Warner, B.D. (2012) Minor Planet Bull. 39, 158-167.]
geometric albedo albedo 0.177   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.746   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=1.41, mean=13.05, max.=20.15) deg.
U-B UB 0.249   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A862 VA)          Discovered 1862-Nov-12 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A862 VA = 1936 SP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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