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673 Edda (A908 SG)
Classification: Main-belt Asteroid          SPK-ID: 2000673
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01002700152804682 3.0757e-08  
a 2.81574102182455 8.5916e-09 au
q 2.787507582296131 8.4571e-08 au
i 2.876188406088808 3.9477e-06 deg
node 226.6923135371703 6.202e-05 deg
peri 235.7239150532761 0.00020295 deg
M 173.5905706765257 0.00019344 deg
tp 2458368.331794017483
(2018-Sep-06.83179402)
0.00092676 TDB
period 1725.788174934654
4.72
7.8988e-06
2.163e-08
d
yr
n .2086003399656109 9.5475e-10 deg/d
Q 2.843974461352969 8.6778e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4017  
   data-arc span      40926 days (112.05 yr)  
   first obs. used      1908-09-21  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:15:55  

Additional Information
 Earth MOID = 1.80533 au 
 Jupiter MOID = 2.14629 au 
 T_jup = 3.317 
[ 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 10.06   n/a E2021B10 IRAS observations used: 20
diameter diameter 37.622 km 0.409 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 22.340 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Bartczak, P.; et al. (2016) Proc. Polish Ast. Soc. 123, 51-57.]
geometric albedo albedo 0.092   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.782   0.056 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.05 deg.
U-B UB 0.427   0.087 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.05 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B S   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)

673 Edda (A908 SG)          Discovered 1908-Sep-20 by Metcalf, J. H. at Taunton
Independent discovery Sept. 21 by A. Kopff, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A908 SG = 1948 BF = 1976 AK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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