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1055 Tynka (1925 WG)
Classification: Main-belt Asteroid          SPK-ID: 2001055
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2079337496105884 2.0016e-08  
a 2.198804013595756 4.1843e-09 au
q 1.741598450389979 4.4699e-08 au
i 5.278038410324716 5.0585e-07 deg
node 147.1188997925486 7.8159e-06 deg
peri 176.6011812034486 8.0037e-06 deg
M 132.2492011854281 2.7438e-06 deg
tp 2458763.009360707933
(2019-Oct-06.50936071)
8.515e-06 TDB
period 1190.907988353869
3.26
3.3994e-06
9.307e-09
d
yr
n .3022903561992305 8.6288e-10 deg/d
Q 2.656009576801532 5.0543e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3503  
   data-arc span      43264 days (118.45 yr)  
   first obs. used      1902-10-08  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:08:20  

Additional Information
 Earth MOID = .727488 au 
 Jupiter MOID = 2.67352 au 
 T_jup = 3.633 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456792.5 (2014-May-15.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2074480417877853 1.9932e-08  
q 1.743125484073153 4.4451e-08 au
tp 2456380.847432330656
(2013-Mar-29.34743233)
8.618e-06 TDB
node 147.1700763158516 7.8257e-06 deg
peri 176.4307571479097 8.0149e-06 deg
i 5.273549192908814 5.0476e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3503  
   data-arc span      43264 days (118.45 yr)  
   first obs. used      1902-10-08  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:08:20  

Additional Information
 Jupiter MOID = 2.67352 au 
 T_jup = 3.633 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.972879188371545E-16 -8.835797319219619E-16 -1.324057087205427E-15 -1.732808982785041E-15 1.534015599964475E-14 2.975272181192885E-15
q -8.835797319219619E-16 1.97589174118558E-15 -8.704454250420393E-15 3.056821669964365E-15 -3.453498499590318E-14 -6.632836844157113E-15
tp -1.324057087205427E-15 -8.704454250420393E-15 7.427036426757558E-11 -2.980160342077774E-12 2.032614425740571E-11 -4.189909543446375E-13
node -1.732808982785041E-15 3.056821669964365E-15 -2.980160342077774E-12 6.124108315044015E-11 -6.003285748288984E-11 3.43690013552396E-12
peri 1.534015599964475E-14 -3.453498499590318E-14 2.032614425740571E-11 -6.003285748288984E-11 6.423935362672675E-11 -3.400998670865008E-12
i 2.975272181192885E-15 -6.632836844157113E-15 -4.189909543446375E-13 3.43690013552396E-12 -3.400998670865008E-12 2.547823840518429E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.08   n/a MPCxxxxx  
diameter diameter 13.479 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 11.893 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:
[Higgins, D.; Pilcher, F. (2009) Minor Planet Bull. 36, 143-144.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Stephens, R.D. (2012) Minor Planet Bull. 39, 226-228.]
geometric albedo albedo 0.169   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)
SMASSII spectral type spec_B S   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)

1055 Tynka (1925 WG)          Discovered 1925-Nov-17 by Buchar, E. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1925 WG = A902 TB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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