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1980 Tezcatlipoca (1950 LA)
Classification: Amor [NEO]          SPK-ID: 2001980
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 543 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .364632700153663 2.4753e-08  
a 1.709606148762775 1.9683e-09 au
q 1.0862278425401 4.2238e-08 au
i 26.8661554440023 4.9399e-06 deg
node 246.5682165714923 7.1026e-06 deg
peri 115.4512233037698 9.6091e-06 deg
M 137.7723054610981 7.6129e-06 deg
tp 2458888.034582180565
(2020-Feb-08.53458218)
1.6869e-05 TDB
period 816.4743272497451
2.24
1.41e-06
3.86e-09
d
yr
n .4409201710146146 7.6146e-10 deg/d
Q 2.332984454985451 2.686e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3561  
   data-arc span      25826 days (70.71 yr)  
   first obs. used      1950-06-19  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32335  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-05 06:40:11  

Additional Information
 Earth MOID = .245238 au 
 Jupiter MOID = 3.41157 au 
 T_jup = 3.996 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456411.5 (2013-Apr-29.0) TDB
Reference: JPL 543 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3646854813359279 2.4769e-08  
q 1.086121325774053 4.2249e-08 au
tp 2456438.773726824380
(2013-May-26.27372682)
1.4022e-05 TDB
node 246.6293646961771 7.1016e-06 deg
peri 115.4193105350303 9.602e-06 deg
i 26.86307499758975 4.9406e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3561  
   data-arc span      25826 days (70.71 yr)  
   first obs. used      1950-06-19  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32335  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-05 06:40:11  

Additional Information
 Jupiter MOID = 3.41157 au 
 T_jup = 3.996 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.134960913145295E-16 -1.045979507648271E-15 4.452152594392541E-14 1.461619374995066E-15 1.700623999955048E-14 -7.557820515306064E-15
q -1.045979507648271E-15 1.784951706761263E-15 -6.562333323105519E-14 -3.136561097826947E-15 -2.488718273418838E-14 1.261094169790001E-14
tp 4.452152594392541E-14 -6.562333323105519E-14 1.966110271542036E-10 -5.82778554718569E-12 9.490427244821265E-11 -2.487420879213541E-12
node 1.461619374995066E-15 -3.136561097826947E-15 -5.82778554718569E-12 5.043273801070465E-11 -4.633193939484993E-11 6.763357552937513E-12
peri 1.700623999955048E-14 -2.488718273418838E-14 9.490427244821265E-11 -4.633193939484993E-11 9.219900995087871E-11 -6.838759435930635E-12
i -7.557820515306064E-15 1.261094169790001E-14 -2.487420879213541E-12 6.763357552937513E-12 -6.838759435930635E-12 2.440976151831857E-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 13.8   n/a MPO473791  
diameter diameter 4.3 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
rotation period rot_per 7.24612 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Kaasalainen, M.; et al. (2004) Icarus 167, 178-196.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2015) Icarus 256, 101-116.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 256-266.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 335-344.]
[Aznar, A.M.; Predatu, M.; Vaduvescu, O.; Oey, J. (2018) arXiv:1801.09420. Romanian J. Phys. 62, 904 (2017).]
geometric albedo albedo 0.25   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
B-V BV 0.955   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=53.35, mean=53.35, max.=53.36) deg.
U-B UB 0.455   0.060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=53.35, mean=53.35, max.=53.36) deg.
Tholen spectral type spec_T SU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Sl   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1980 Tezcatlipoca (1950 LA)          Discovered 1950-Jun-19 by Wilson, A. G. at Palomar
and A. A. E. Wallenquist
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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