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74950 (1999 TO188)
Classification: Main-belt Asteroid          SPK-ID: 2074950
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1094606944267475 4.5294e-08  
a 2.2832928984283 9.7412e-09 au
q 2.033362072186677 1.025e-07 au
i 8.866904824313309 5.105e-06 deg
node 286.5818984796392 2.9066e-05 deg
peri 253.5287683830001 3.6311e-05 deg
M 205.2106069062953 2.2444e-05 deg
tp 2459542.350604737728
(2021-Nov-23.85060474)
7.9316e-05 TDB
period 1260.204034700845
3.45
8.0646e-06
2.208e-08
d
yr
n .2856680268330191 1.8281e-09 deg/d
Q 2.533223724669922 1.0807e-08 au
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      7318 days (20.04 yr)  
   first obs. used      1999-10-12  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:56:59  

Additional Information
 Earth MOID = 1.05831 au 
 Jupiter MOID = 2.50112 au 
 T_jup = 3.580 
[ 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 15.2   n/a MPO337823  
diameter diameter 4.308 km 1.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.079   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

74950 (1999 TO188)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TO188 = 2001 BP21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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