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1029 La Plata (A924 HB)
Classification: Main-belt Asteroid          SPK-ID: 2001029
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02792278699469455 4.304e-08  
a 2.889892816375371 9.8251e-09 au
q 2.809198954826223 1.2523e-07 au
i 2.424742015477898 4.5133e-06 deg
node 29.89243137064968 8.2147e-05 deg
peri 141.1836102691543 0.00010166 deg
M 249.6952763751404 6.0478e-05 deg
tp 2459550.310006981973
(2021-Dec-01.81000698)
0.00030206 TDB
period 1794.407311029263
4.91
9.151e-06
2.505e-08
d
yr
n .2006233466545038 1.0231e-09 deg/d
Q 2.970586677924518 1.0099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3040  
   data-arc span      37996 days (104.03 yr)  
   first obs. used      1916-10-31  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44029  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:50  

Additional Information
 Earth MOID = 1.81394 au 
 Jupiter MOID = 1.98867 au 
 T_jup = 3.289 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456196.5 (2012-Sep-26.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02628578136343623 4.3662e-08  
q 2.814617262662235 1.2675e-07 au
tp 2455984.065121607566
(2012-Feb-26.56512161)
0.00031027 TDB
node 29.93518857014613 8.2037e-05 deg
peri 145.8188370042439 0.00010284 deg
i 2.427903885072505 4.5146e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3040  
   data-arc span      37996 days (104.03 yr)  
   first obs. used      1916-10-31  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44029  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:50  

Additional Information
 Jupiter MOID = 1.98867 au 
 T_jup = 3.289 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.906328417833286E-15 -5.518164352233072E-15 1.175572615126439E-12 -6.357583797279335E-15 2.657348134174038E-13 -1.577408808846707E-17
q -5.518164352233072E-15 1.60653612026339E-14 -2.973720171545152E-12 1.848835037862099E-14 -6.843308096637793E-13 1.388861083903866E-16
tp 1.175572615126439E-12 -2.973720171545152E-12 9.626903989395773E-8 -1.537564768233423E-11 1.925357000777622E-8 9.544823617188536E-14
node -6.357583797279335E-15 1.848835037862099E-14 -1.537564768233423E-11 6.730142316142191E-9 -6.726885089133883E-9 -1.086709197858761E-10
peri 2.657348134174038E-13 -6.843308096637793E-13 1.925357000777622E-8 -6.726885089133883E-9 1.05757245426486E-8 1.086056167652246E-10
i -1.577408808846707E-17 1.388861083903866E-16 9.544823617188536E-14 -1.086709197858761E-10 1.086056167652246E-10 2.038133250569468E-11

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 10.9   n/a MPO502162 IRAS observations used: 2
diameter diameter 20.78 km 1.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 15.310 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Slivan, S.M.; Binzel, R.P.; Boroumand, S.C.; Pan M.W.; et al. (2008) Icarus 195, 226-276.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.1819   0.039 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
B-V BV 0.787   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.17, mean=9.27, max.=12.32) deg.
U-B UB 0.390   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.17, mean=9.27, max.=12.32) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1029 La Plata (A924 HB)          Discovered 1924-Apr-28 by Hartmann, J. at La Plata
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A924 HB = 1938 DR2 = 1969 OU = A916 UL = A916 UR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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