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18234 (4262 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2018234
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0845441801895673 3.839e-08  
a 2.741348832316266 1.224e-08 au
q 2.509583742674459 1.0847e-07 au
i 3.276566383527702 3.5467e-06 deg
node 74.55558574109722 6.5584e-05 deg
peri 89.82117737208752 6.9011e-05 deg
M 318.1397350571147 2.1611e-05 deg
tp 2459193.272177195450
(2020-Dec-09.77217720)
9.9891e-05 TDB
period 1657.848651580428
4.54
1.1104e-05
3.04e-08
d
yr
n .2171488933304085 1.4544e-09 deg/d
Q 2.973113921958072 1.3275e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      17847 days (48.86 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:21:54  

Additional Information
 Earth MOID = 1.51963 au 
 Jupiter MOID = 2.0008 au 
 T_jup = 3.342 
[ 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 13.8   n/a MPO358807  

18234 (4262 T-1)          Discovered 1971-Mar-26 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 4262 T-1 = 1980 FM10 = 1992 YS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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