Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08617959387015391 3.4184e-08  
a 2.668845063910271 1.0091e-08 au
q 2.438845080200118 9.0866e-08 au
i 11.48295531319085 4.5373e-06 deg
node 342.0430269401318 1.7359e-05 deg
peri 245.5980923315258 3.1826e-05 deg
M 171.269237311406 2.8164e-05 deg
tp 2457842.864470027265
(2017-Mar-30.36447003)
0.00012392 TDB
period 1592.514774233892
4.36
9.0323e-06
2.473e-08
d
yr
n .2260575574083351 1.2821e-09 deg/d
Q 2.898845047620423 1.0961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2263  
   data-arc span      32200 days (88.16 yr)  
   first obs. used      1931-10-10  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .441  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:56:22  

Additional Information
 Earth MOID = 1.45735 au 
 Jupiter MOID = 2.15673 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-January); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-29 05:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin