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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2081590766394749 3.4359e-08  
a 2.198868322185575 4.9552e-09 au
q 1.741153922587634 7.6291e-08 au
i 5.277226044380376 3.9631e-06 deg
node 147.1324610750933 3.5936e-05 deg
peri 176.5076509820647 3.6798e-05 deg
M 310.9316639712969 8.4331e-06 deg
tp 2458762.828991634087
(2019-Oct-06.32899163)
2.8027e-05 TDB
period 1190.960234601944
3.26
4.0258e-06
1.102e-08
d
yr
n .3022770950201568 1.0218e-09 deg/d
Q 2.656582721783515 5.9867e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2760  
   data-arc span      42685 days (116.87 yr)  
   first obs. used      1902-10-08  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47852  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:14:31  

Additional Information
 Earth MOID = .728105 au 
 Jupiter MOID = 2.67004 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-January); 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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