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2797 Teucer (1981 LK)
Classification: Jupiter Trojan          SPK-ID: 2002797
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08780787595697373 3.8198e-08  
a 5.107694501748031 6.0928e-08 au
q 4.659198696512424 2.2958e-07 au
i 22.38907906333477 4.2657e-06 deg
node 69.93404533254652 1.1356e-05 deg
peri 48.28154909434332 3.0447e-05 deg
M 260.2261320390193 3.0207e-05 deg
tp 2460369.057549379906
(2024-Feb-28.55754938)
0.00036227 TDB
period 4216.341677174275
11.54
7.5443e-05
2.066e-07
d
yr
n .08538207469022441 1.5277e-09 deg/d
Q 5.556190306983639 6.6278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2234  
   data-arc span      29240 days (80.05 yr)  
   first obs. used      1940-12-28  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:05:40  

Additional Information
 Earth MOID = 3.71597 au 
 Jupiter MOID = .0243524 au 
 T_jup = 2.844 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456251.5 (2012-Nov-20.0) TDB
Reference: JPL 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08913719467008559 3.8073e-08  
q 4.645483022033249 2.2981e-07 au
tp 2456161.004889585902
(2012-Aug-21.50488959)
0.00033332 TDB
node 69.93220189141837 1.1353e-05 deg
peri 48.29991433064357 3.0219e-05 deg
i 22.40286390151358 4.2688e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2234  
   data-arc span      29240 days (80.05 yr)  
   first obs. used      1940-12-28  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:05:40  

Additional Information
 Jupiter MOID = .0243524 au 
 T_jup = 2.844 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.449544344296827E-15 -8.554579064179972E-15 -6.162589166105426E-13 4.197352027726961E-16 -8.313364506445716E-14 -9.141838893936814E-16
q -8.554579064179972E-15 5.281340035171812E-14 7.966919820357173E-12 4.274671872864404E-15 8.519817827649293E-13 7.387331419536923E-15
tp -6.162589166105426E-13 7.966919820357173E-12 1.111026484803859E-7 -3.800527340911592E-11 9.392238265704095E-9 4.39360498562925E-12
node 4.197352027726961E-16 4.274671872864404E-15 -3.800527340911592E-11 1.288990712281931E-10 -1.219994837204055E-10 -1.437416470054051E-11
peri -8.313364506445716E-14 8.519817827649293E-13 9.392238265704095E-9 -1.219994837204055E-10 9.132006869624859E-10 1.370788751600982E-11
i -9.141838893936814E-16 7.387331419536923E-15 4.39360498562925E-12 -1.437416470054051E-11 1.370788751600982E-11 1.822259207967537E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.94   n/a E2021B10  
diameter diameter 89.430 km 0.755 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 10.145 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Lederer, S.M.; Coley, D.R.; Rohl, D.A. (2011) Minor Planet Bull. 38, 116-120.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2014) Minor Planet Bull. 41, 210-212.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
geometric albedo albedo 0.073   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

2797 Teucer (1981 LK)          Discovered 1981-Jun-04 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 LK = 1940 YG = 1975 VA1 = 1975 XQ2 = 1978 EQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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