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46489 (4156 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2046489
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1292078614097283 3.4402e-08  
a 2.606957930993239 1.224e-08 au
q 2.270118471944473 9.2179e-08 au
i 1.477734102850033 3.3725e-06 deg
node 68.42813134904085 0.00018159 deg
peri 230.9468534466147 0.00018264 deg
M 82.64078827024544 1.7991e-05 deg
tp 2458647.567695785239
(2019-Jun-13.06769579)
7.7538e-05 TDB
period 1537.444549800597
4.21
1.0827e-05
2.964e-08
d
yr
n .2341547862956691 1.649e-09 deg/d
Q 2.943797390042006 1.3821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1024  
   data-arc span      16844 days (46.12 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:33:17  

Additional Information
 Earth MOID = 1.25478 au 
 Jupiter MOID = 2.24714 au 
 T_jup = 3.399 
[ 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 15.3   n/a MPO436107  
diameter diameter 2.151 km 0.560 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.348   0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46489 (4156 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 4156 T-2 = 2001 FE103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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