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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08595059909740851 3.3609e-08  
a 2.669101958574122 9.9641e-09 au
q 2.43969104618261 8.9634e-08 au
i 11.48328609055952 4.3489e-06 deg
node 342.0276475934575 1.7296e-05 deg
peri 245.7027476381816 3.1369e-05 deg
M 261.567335763769 2.7946e-05 deg
tp 2459435.994738316492
(2021-Aug-09.49473832)
0.00012422 TDB
period 1592.7447154908
4.36
8.9189e-06
2.442e-08
d
yr
n .2260249219468087 1.2657e-09 deg/d
Q 2.898512870965634 1.0821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2420  
   data-arc span      32339 days (88.54 yr)  
   first obs. used      1931-10-10  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42811  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:21:25  

Additional Information
 Earth MOID = 1.4581 au 
 Jupiter MOID = 2.15599 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 12.2   n/a MPO263355  
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. 2019-August); 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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