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14423 (1991 SM2)
Classification: Main-belt Asteroid          SPK-ID: 2014423
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06583678647399623 3.0894e-08  
a 2.272333562749963 6.7068e-09 au
q 2.122730423181499 6.9486e-08 au
i 6.941089976467339 3.6447e-06 deg
node 15.67857445719706 2.9936e-05 deg
peri 58.6017996001642 4.5548e-05 deg
M 80.04613513379751 3.2754e-05 deg
tp 2458722.308139808104
(2019-Aug-26.80813981)
0.00011393 TDB
period 1251.141850904891
3.43
5.5391e-06
1.517e-08
d
yr
n .2877371576529307 1.2739e-09 deg/d
Q 2.421936702318428 7.1484e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1853  
   data-arc span      10457 days (28.63 yr)  
   first obs. used      1991-09-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47585  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:01:18  

Additional Information
 Earth MOID = 1.14582 au 
 Jupiter MOID = 2.72106 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457096.5 (2015-Mar-15.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06508071767336196 3.0821e-08  
q 2.124744333138079 6.9265e-08 au
tp 2457470.004583761516
(2016-Mar-22.50458376)
0.00011636 TDB
node 15.70213389522182 2.992e-05 deg
peri 58.32510511372978 4.592e-05 deg
i 6.943404865521281 3.6455e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1853  
   data-arc span      10457 days (28.63 yr)  
   first obs. used      1991-09-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47585  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:01:18  

Additional Information
 Jupiter MOID = 2.72106 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.499629772121334E-16 -2.12636910825188E-15 -2.443996642868446E-13 2.641031307951706E-16 -1.008211702383331E-13 -1.780938549449721E-15
q -2.12636910825188E-15 4.79769923466767E-15 4.617865850550577E-13 -1.727380355442885E-16 1.964501758801542E-13 4.043356954918024E-15
tp -2.443996642868446E-13 4.617865850550577E-13 1.353895770555711E-8 -7.046552759807013E-12 4.063300029206621E-9 -7.096424212429338E-12
node 2.641031307951706E-16 -1.727380355442885E-16 -7.046552759807013E-12 8.951963590711233E-10 -8.903075429758317E-10 -1.693637665655658E-11
peri -1.008211702383331E-13 1.964501758801542E-13 4.063300029206621E-9 -8.903075429758317E-10 2.108636854819613E-9 1.478147104597223E-11
i -1.780938549449721E-15 4.043356954918024E-15 -7.096424212429338E-12 -1.693637665655658E-11 1.478147104597223E-11 1.328964659648636E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO452373  
diameter diameter 3.068 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.430   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14423 (1991 SM2)          Discovered 1991-Sep-16 by Holt, H. E. at Palomar
Reference: 20000418/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 SM2 = 1993 FU10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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