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678 Fredegundis (A909 BQ)
Classification: Main-belt Asteroid          SPK-ID: 2000678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 109 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195497735563707 1.3611e-08  
a 2.573047837937609 6.1998e-09 au
q 2.008135767768698 3.506e-08 au
i 6.094111443313542 6.209e-07 deg
node 281.1143883148625 3.6088e-06 deg
peri 121.2181472491159 5.7944e-06 deg
M 94.82993984589481 3.3129e-06 deg
tp 2458803.387834209080
(2019-Nov-15.88783421)
1.3537e-05 TDB
period 1507.544768214044
4.13
5.4487e-06
1.492e-08
d
yr
n .2387988785410892 8.6309e-10 deg/d
Q 3.13795990810652 7.561e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2865  
   data-arc span      40945 days (112.10 yr)  
   first obs. used      1909-02-14  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:44:27  

Additional Information
 Earth MOID = 1.0242 au 
 Jupiter MOID = 2.30105 au 
 T_jup = 3.387 
[ 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 9.28   n/a E2021B10 IRAS observations used: 14
diameter diameter 39.585 km 0.581 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.61624 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Zeigler, K.W.; Wampole, R.C. (1988) Minor Planet Bull. 15, 15-16.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D.; Warner, B.D.; Harris, A.W.; Shepard, M.K. (2008) Bull. Amer. Astron. Soc. 40, #28.16.]
geometric albedo albedo 0.344   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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)

678 Fredegundis (A909 BQ)          Discovered 1909-Jan-22 by Lorenz, W. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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