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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2079365214018857 3.4146e-08  
a 2.198442157018467 4.7804e-09 au
q 1.741305742384789 7.5826e-08 au
i 5.277889858591316 3.9484e-06 deg
node 147.1224889987423 3.4997e-05 deg
peri 176.5511063939387 3.5861e-05 deg
M 71.83882478583672 8.0359e-06 deg
tp 2458762.910244657606
(2019-Oct-06.41024466)
2.6435e-05 TDB
period 1190.614019344661
3.26
3.8834e-06
1.063e-08
d
yr
n .3023649933150893 9.8621e-10 deg/d
Q 2.655578571652145 5.7744e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2960  
   data-arc span      42844 days (117.30 yr)  
   first obs. used      1902-10-08  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:44:30  

Additional Information
 Earth MOID = .729148 au 
 Jupiter MOID = 2.67385 au 
 T_jup = 3.633 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.1   n/a MPO384755  
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. 2019-August); 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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