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18254 (4062 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1147110309615689 3.2768e-08  
a 2.714557109619867 1.0787e-08 au
q 2.403167464971316 8.9166e-08 au
i 13.08335755832403 4.1456e-06 deg
node 180.676647896959 1.5538e-05 deg
peri 329.1877325244968 2.3853e-05 deg
M 105.5309179555727 1.7191e-05 deg
tp 2458917.622848389172
(2020-Mar-09.12284839)
7.7791e-05 TDB
period 1633.604425316141
4.47
9.7375e-06
2.666e-08
d
yr
n .2203715871609074 1.3136e-09 deg/d
Q 3.025946754268419 1.2025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1806  
   data-arc span      17488 days (47.88 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:07:59  

Additional Information
 Earth MOID = 1.42211 au 
 Jupiter MOID = 1.98148 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457160.5 (2015-May-18.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1159711491810129 3.2823e-08  
q 2.400274369639753 8.9685e-08 au
tp 2457285.982284459834
(2015-Sep-20.48228446)
7.6758e-05 TDB
node 180.7051507692928 1.5547e-05 deg
peri 329.7135892277499 2.3661e-05 deg
i 13.07902871122134 4.1446e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1806  
   data-arc span      17488 days (47.88 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:07:59  

Additional Information
 Jupiter MOID = 1.98148 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.077328365172613E-15 -2.926667116639146E-15 4.207422793128878E-13 -1.633750184779906E-15 9.613008726831145E-14 -7.915867835647701E-16
q -2.926667116639146E-15 8.043421281381842E-15 -1.214716789021435E-12 4.930764484764669E-15 -2.807438741821751E-13 2.367604960911386E-15
tp 4.207422793128878E-13 -1.214716789021435E-12 5.891813609752804E-9 -7.642724853715729E-12 1.381323537008723E-9 1.490307571962644E-12
node -1.633750184779906E-15 4.930764484764669E-15 -7.642724853715729E-12 2.417015283946543E-10 -2.367460243042638E-10 5.593911155636094E-12
peri 9.613008726831145E-14 -2.807438741821751E-13 1.381323537008723E-9 -2.367460243042638E-10 5.598389638240366E-10 -5.079909177112746E-12
i -7.915867835647701E-16 2.367604960911386E-15 1.490307571962644E-12 5.593911155636094E-12 -5.079909177112746E-12 1.717737402686646E-11

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 14.14   n/a MPO636339  

18254 (4062 T-2)          Discovered 1973-Sep-29 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
 4062 T-2 = 1998 FB74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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