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76 Freia
Classification: Outer Main-belt Asteroid          SPK-ID: 2000076
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1660580492886424 3.472e-08  
a 3.41785394570356 1.2839e-08 AU
q 2.850291786726538 1.1989e-07 AU
i 2.11737135164099 3.7111e-06 deg
node 204.3741564919345 0.00011589 deg
peri 253.2800534393106 0.00011634 deg
M 32.96539334481727 1.1953e-05 deg
tp 2456789.158668859758
(2014-May-11.65866886)
7.6061e-05 JED
period 2307.962123025869
6.32
1.3004e-05
3.56e-08
d
yr
n .1559817626157658 8.7889e-10 deg/d
Q 3.985416104680583 1.4971e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1802  
   data-arc span      54771 days (149.95 yr)  
   first obs. used      1864-04-23  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64545  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:53:26  

Additional Information
 Earth MOID = 1.86786 AU 
 T_jup = 3.120 
[ 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 7.90 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
diameter diameter 183.66 km 4.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
rotation period rot_per 9.969 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Lagerkvist, C.-I.; Hahn, G.; Magnusson, P.; Rickman, H.; Hammarback, G. (1986) in Asteroids, Comets, Meteors II. C.-I. Lagerkvist, B.A. Lindblad, M. Lundstedt, H. Rickman, Uppsala, eds. pp. 67-72.]
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Armstrong, J.C.; Nellermoe, B.L.; Reitzler, L.E. (1996) I.A.P.P.P. Comm. 63, 59-68.]
[Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, N.M.; Krugly, Yu.N.; et al. (2005) Abstr. IAU Symp. 229, p. 133.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, M.; Krugly, Y.N.; et al. (2008) Icarus 196, 601-611.]
[Stephens, R.D.; Warner, B.D. (2008) Minor Planet Bul. 35, 84-85.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0362   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV .704 mag .013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=.55, mean=10.43, max.=16.49) deg.
U-B UB .298 mag .047 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=.55, mean=11.26, max.=20.23) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B X   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)

76 Freia          Discovered 1862-Oct-21 by D'Arrest, H. at Copenhagen
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A911 OB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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