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1323 Tugela (1934 LD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001323
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481276626835592 3.7586e-08  
a 3.228837960219198 1.4601e-08 au
q 2.750557739987977 1.2063e-07 au
i 18.78503923218908 4.8854e-06 deg
node 45.23438577354511 1.0531e-05 deg
peri 136.4256465644882 1.8445e-05 deg
M 44.02794449953759 1.3708e-05 deg
tp 2458741.324639029033
(2019-Sep-14.82463903)
8.0969e-05 TDB
period 2119.179784796177
5.80
1.4374e-05
3.935e-08
d
yr
n .1698770451581222 1.1523e-09 deg/d
Q 3.707118180450419 1.6764e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2810  
   data-arc span      40878 days (111.92 yr)  
   first obs. used      1908-10-27  
   last obs. used      2020-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35722  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:11  

Additional Information
 Earth MOID = 1.77977 au 
 Jupiter MOID = 1.35883 au 
 T_jup = 3.087 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456691.5 (2014-Feb-03.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .148319622362086 3.7404e-08  
q 2.749434702930342 1.2e-07 au
tp 2456617.096873839920
(2013-Nov-20.59687384)
8.4661e-05 TDB
node 45.26870085322959 1.053e-05 deg
peri 135.7222967345692 1.8485e-05 deg
i 18.78804718433147 4.886e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2810  
   data-arc span      40878 days (111.92 yr)  
   first obs. used      1908-10-27  
   last obs. used      2020-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35722  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:11  

Additional Information
 Jupiter MOID = 1.35883 au 
 T_jup = 3.087 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.399079843670925E-15 -4.464491992769301E-15 1.075116885848062E-12 -3.670417726352695E-15 2.066635629773083E-13 -9.855070020491367E-16
q -4.464491992769301E-15 1.439959764189514E-14 -3.799740429852361E-12 5.522205974758374E-15 -7.227259339033848E-13 7.123302822356376E-16
tp 1.075116885848062E-12 -3.799740429852361E-12 7.167400439397329E-9 -1.458024598791793E-11 1.295380910127898E-9 -1.634538660616177E-12
node -3.670417726352695E-15 5.522205974758374E-15 -1.458024598791793E-11 1.108772134242917E-10 -1.081793095431714E-10 -2.483814283479481E-12
peri 2.066635629773083E-13 -7.227259339033848E-13 1.295380910127898E-9 -1.081793095431714E-10 3.416999455749033E-10 1.638206757692069E-12
i -9.855070020491367E-16 7.123302822356376E-16 -1.634538660616177E-12 -2.483814283479481E-12 1.638206757692069E-12 2.387334925091041E-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 9.9   n/a MPO302067  
diameter diameter 78.295 km 0.511 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 19.50 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 72-77.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.018   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Xc   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)

1323 Tugela (1934 LD)          Discovered 1934-May-19 by Jackson, C. at Johannesburg (UO)
Prediscovery observations exist as early as May 8. The May 19 discovery date quoted by some authorities in in error.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1934 LD = 1974 HR3 = 1974 KM = 1974 KO = A908 UB = A911 HC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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