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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .179989647468667 2.5407e-08  
a 2.571333582472138 8.3758e-09 au
q 2.108520157438634 6.2084e-08 au
i 10.51603005458955 4.4286e-07 deg
node 200.5403466149688 2.3472e-06 deg
peri 185.0550201938107 4.5812e-06 deg
M 215.7399970418048 8.0226e-06 deg
tp 2459804.003086697747
(2022-Aug-12.50308670)
3.5878e-05 TDB
period 1506.03844971602
4.12
7.3586e-06
2.015e-08
d
yr
n .2390377218243544 1.168e-09 deg/d
Q 3.034147007505643 9.8834e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2173  
   data-arc span      32609 days (89.28 yr)  
   first obs. used      1931-10-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:10:24  

Additional Information
 Earth MOID = 1.11135 au 
 Jupiter MOID = 2.41913 au 
 T_jup = 3.383 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456758.5 (2014-Apr-11.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774772287042382 2.5264e-08  
q 2.116216991124966 6.15e-08 au
tp 2456789.223945920335
(2014-May-11.72394592)
2.5883e-05 TDB
node 200.6356881222235 2.3523e-06 deg
peri 184.8298364102125 4.6565e-06 deg
i 10.49659831605083 4.4193e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2173  
   data-arc span      32609 days (89.28 yr)  
   first obs. used      1931-10-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:10:24  

Additional Information
 Jupiter MOID = 2.41913 au 
 T_jup = 3.383 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.382533393082228E-16 -1.546443904589188E-15 5.362988362195858E-13 -1.57721220948822E-15 7.947453479087526E-14 2.370399621052997E-15
q -1.546443904589188E-15 3.782304837181528E-15 -1.276996901862438E-12 3.84917715672274E-15 -1.858457962204439E-13 -5.77437737112352E-15
tp 5.362988362195858E-13 -1.276996901862438E-12 6.699209993684985E-10 6.759485160598665E-12 1.050987265034612E-10 1.308818054090365E-12
node -1.57721220948822E-15 3.84917715672274E-15 6.759485160598665E-12 5.533124952208842E-12 -3.667067062278917E-12 -5.530328983405153E-13
peri 7.947453479087526E-14 -1.858457962204439E-13 1.050987265034612E-10 -3.667067062278917E-12 2.168260416327727E-11 7.3273973424684E-13
i 2.370399621052997E-15 -5.77437737112352E-15 1.308818054090365E-12 -5.530328983405153E-13 7.3273973424684E-13 1.953036663248244E-13

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 13.09   n/a E2021B10  
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 6.60444 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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