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1231 Auricula (1931 TE2)
Classification: Main-belt Asteroid          SPK-ID: 2001231
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08583380255928978 1.4959e-08  
a 2.668795269601104 8.6676e-09 au
q 2.439722423358996 4.2776e-08 au
i 11.48424879362616 5.5975e-07 deg
node 342.0255154895657 3.5769e-06 deg
peri 245.7662309569968 1.4157e-05 deg
M 306.7029134691266 1.6085e-05 deg
tp 2459436.261173186600
(2021-Aug-09.76117319)
7.1404e-05 TDB
period 1592.470205627674
4.36
7.7579e-06
2.124e-08
d
yr
n .2260638841014332 1.1013e-09 deg/d
Q 2.897868115843211 9.4115e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2755  
   data-arc span      32673 days (89.45 yr)  
   first obs. used      1931-10-10  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41144  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:18:41  

Additional Information
 Earth MOID = 1.45709 au 
 Jupiter MOID = 2.15562 au 
 T_jup = 3.348 
[ 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 12.29   n/a E2021B10  
diameter diameter 18.713 km 0.650 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.9816 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Bembrick, C.; Crawford, G.; Allen, B. (2008) Minor Planet Bull. 35, 185.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.066   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1231 Auricula (1931 TE2)          Discovered 1931-Oct-10 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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