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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09518318232590958 3.3848e-08  
a 2.258931338179765 7.3205e-09 au
q 2.043919064756089 7.6835e-08 au
i 6.374737491260018 3.5165e-06 deg
node 263.1624344335866 3.9008e-05 deg
peri 146.5227335353086 4.4937e-05 deg
M 319.8071279628584 2.244e-05 deg
tp 2459138.952088772920
(2020-Oct-16.45208877)
7.7423e-05 TDB
period 1240.089335049067
3.40
6.0281e-06
1.65e-08
d
yr
n .2903016660374357 1.4112e-09 deg/d
Q 2.47394361160344 8.0173e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1989  
   data-arc span      16013 days (43.84 yr)  
   first obs. used      1977-01-13  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:11:26  

Additional Information
 Earth MOID = 1.0582 au 
 Jupiter MOID = 2.81525 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 13.9   n/a MPO384781  
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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