Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
77 Frigga
Classification: Main-belt Asteroid          SPK-ID: 2000077
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
5.5846e-05 JED
period 1592.931419247013
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.]
[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 ]
FirstGov 2016-May-01 23:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin