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JPL Small-Body Database Browser
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74981 (1999 TB240)
Classification: Main-belt Asteroid          SPK-ID: 2074981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1439648141357028 4.9672e-08  
a 2.398804612511684 1.5504e-08 au
q 2.053461152323572 1.1358e-07 au
i 4.669552807048595 4.8847e-06 deg
node 125.3307029319799 5.9748e-05 deg
peri 228.8866091770727 6.2423e-05 deg
M 116.0130160480972 2.0478e-05 deg
tp 2458163.184413466074
(2018-Feb-13.68441347)
7.5084e-05 TDB
period 1357.034033896195
3.72
1.3156e-05
3.602e-08
d
yr
n .2652844298726982 2.5719e-09 deg/d
Q 2.744148072699795 1.7736e-08 au
  Orbit Determination Parameters
   # obs. used (total)      619  
   data-arc span      8063 days (22.08 yr)  
   first obs. used      1997-02-07  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55414  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:17:22  

Additional Information
 Earth MOID = 1.05073 au 
 Jupiter MOID = 2.67878 au 
 T_jup = 3.508 
[ 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 15.8   n/a MPO453162  
diameter diameter 1.516 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74981 (1999 TB240)          Discovered 1999-Oct-04 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TB240 = 1997 CB24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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