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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2939733825081485 4.6378e-08  
a 2.347491008356436 1.1353e-08 au
q 1.65739113622243 1.073e-07 au
i 22.03513540281947 1.0127e-05 deg
node 336.40678213478 1.2343e-05 deg
peri 115.7192539468632 2.2169e-05 deg
M 299.1160260974513 1.7588e-05 deg
tp 2459222.679928878483
(2021-Jan-08.17992888)
6.5078e-05 TDB
period 1313.724602212695
3.60
9.5305e-06
2.609e-08
d
yr
n .274030035970747 1.988e-09 deg/d
Q 3.037590880490442 1.4691e-08 au
  Orbit Determination Parameters
   # obs. used (total)      840  
   data-arc span      10579 days (28.96 yr)  
   first obs. used      1991-08-18  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52974  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:01:48  

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

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