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100045 (1991 TK1)
Classification: Mars-crossing Asteroid          SPK-ID: 2100045
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2940845722505613 3.8898e-08  
a 2.347798204786265 7.7784e-09 au
q 1.65734697400106 9.296e-08 au
i 22.03505539553895 6.3026e-06 deg
node 336.4058068568196 1.1792e-05 deg
peri 115.7167989596568 1.8136e-05 deg
M 353.9275523553821 9.4607e-06 deg
tp 2459222.664138458112
(2021-Jan-08.16413846)
3.4516e-05 TDB
period 1313.982484804485
3.60
6.5299e-06
1.788e-08
d
yr
n .2739762547546944 1.3615e-09 deg/d
Q 3.03824943557147 1.0066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      10747 days (29.42 yr)  
   first obs. used      1991-08-18  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:24:11  

Additional Information
 Earth MOID = .773742 au 
 Jupiter MOID = 2.35063 au 
 T_jup = 3.407 
[ show covariance matrix ]

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 14.28   n/a E2021B55  
rotation period rot_per 27.1736 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

100045 (1991 TK1)          Discovered 1991-Oct-05 by Shoemaker, C. S. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1991 TK1 = 1998 QQ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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