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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2939733862330812 4.7334e-08  
a 2.347491010210913 1.1681e-08 au
q 1.657391128787495 1.0918e-07 au
i 22.03513615609143 1.0143e-05 deg
node 336.4067822713557 1.2319e-05 deg
peri 115.7192544950659 2.2332e-05 deg
M 299.1160242719935 1.8097e-05 deg
tp 2459222.679935803285
(2021-Jan-08.17993580)
6.7013e-05 TDB
period 1313.724603769424
3.60
9.8059e-06
2.685e-08
d
yr
n .2740300356460286 2.0454e-09 deg/d
Q 3.037590891634332 1.5115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      10217 days (27.97 yr)  
   first obs. used      1991-08-18  
   last obs. used      2019-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5501  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:54:10  

Additional Information
 Earth MOID = .773855 au 
 Jupiter MOID = 2.35135 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 14.3   n/a MPO385418  

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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