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1230 Riceia (1931 TX1)
Classification: Main-belt Asteroid          SPK-ID: 2001230
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798712261743466 4.4019e-08  
a 2.571549382131735 9.3466e-09 au
q 2.109001641599816 1.0927e-07 au
i 10.51537063389743 4.2558e-06 deg
node 200.540058637564 1.8455e-05 deg
peri 185.0817165806347 2.0846e-05 deg
M 167.8960742081892 1.2195e-05 deg
tp 2458298.028400810578
(2018-Jun-28.52840081)
4.8995e-05 TDB
period 1506.228045538525
4.12
8.2118e-06
2.248e-08
d
yr
n .2390076330515333 1.303e-09 deg/d
Q 3.034097122663654 1.1028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2120  
   data-arc span      32419 days (88.76 yr)  
   first obs. used      1931-10-09  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:21:11  

Additional Information
 Earth MOID = 1.11311 au 
 Jupiter MOID = 2.41798 au 
 T_jup = 3.383 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO319097  
diameter diameter 6.194 km 0.344 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.67317 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.318   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1230 Riceia (1931 TX1)          Discovered 1931-Oct-09 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 TX1 = 1964 TS = 1964 UE = 1975 HH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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