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3307 Athabasca (1981 DE1)
Classification: Main-belt Asteroid          SPK-ID: 2003307
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09531059555082216 1.044e-08  
a 2.259219191858847 5.9662e-09 au
q 2.043891665202933 2.477e-08 au
i 6.374571998232675 4.2167e-07 deg
node 263.1639355778046 7.4997e-06 deg
peri 146.5459681979893 1.1714e-05 deg
M 17.84466362706088 1.014e-05 deg
tp 2459139.018869441679
(2020-Oct-16.51886944)
3.4956e-05 TDB
period 1240.326377877542
3.40
4.9132e-06
1.345e-08
d
yr
n .2902461855370965 1.1497e-09 deg/d
Q 2.474546718514761 6.5348e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2298  
   data-arc span      16141 days (44.19 yr)  
   first obs. used      1977-01-13  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44615  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:53:13  

Additional Information
 Earth MOID = 1.05736 au 
 Jupiter MOID = 2.81477 au 
 T_jup = 3.607 
[ 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 13.98   n/a MPCxxxxx  
diameter diameter 3.628 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.902 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hasegawa, S.; Miyasaka, S.; Yoshizumi, C.; Sekiguchi, T.; et al. (2012) arXiv:1204.0548.]
geometric albedo albedo 0.444   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B V   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)

3307 Athabasca (1981 DE1)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 DE1 = 1977 AS = 2003 WM33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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