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46570 (1991 TK8)
Classification: Main-belt Asteroid          SPK-ID: 2046570
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297187666785455 3.7802e-08  
a 2.340740477978625 6.7024e-09 au
q 2.037102510060688 8.7653e-08 au
i 6.080102022520713 4.1075e-06 deg
node 151.4647305656415 3.8823e-05 deg
peri 258.2189398860417 4.2984e-05 deg
M 23.28875925619931 1.6393e-05 deg
tp 2459115.880164717464
(2020-Sep-23.38016472)
5.9624e-05 TDB
period 1308.061986754563
3.58
5.6182e-06
1.538e-08
d
yr
n .2752163151634711 1.1821e-09 deg/d
Q 2.644378445896561 7.5719e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      11228 days (30.74 yr)  
   first obs. used      1990-05-25  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51829  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:50:06  

Additional Information
 Earth MOID = 1.05646 au 
 Jupiter MOID = 2.70955 au 
 T_jup = 3.546 
[ 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 14.99   n/a MPCxxxxx  
diameter diameter 2.750 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.281   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46570 (1991 TK8)          Discovered 1991-Oct-01 by Spacewatch at Kitt Peak
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 TK8 = 1998 QA36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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