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21385 (1998 FV8)
Classification: Main-belt Asteroid          SPK-ID: 2021385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620953165237162 3.3171e-08  
a 2.400010968108151 9.2585e-09 au
q 2.01098043057227 8.0868e-08 au
i 2.383065290357041 3.7774e-06 deg
node 81.73615246931973 0.00010797 deg
peri 185.1445170978883 0.00010906 deg
M 39.36473917955654 1.7977e-05 deg
tp 2459248.001131662065
(2021-Feb-02.50113166)
6.7432e-05 TDB
period 1358.057838458134
3.72
7.8584e-06
2.152e-08
d
yr
n .265084438825319 1.5339e-09 deg/d
Q 2.789041505644033 1.0759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      10984 days (30.07 yr)  
   first obs. used      1991-07-13  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:42:13  

Additional Information
 Earth MOID = .995005 au 
 Jupiter MOID = 2.28975 au 
 T_jup = 3.507 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457047.5 (2015-Jan-25.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162437660054127 3.317e-08  
q 2.00901401092977 8.0792e-08 au
tp 2456532.643571424376
(2013-Aug-28.14357142)
6.1671e-05 TDB
node 81.77680554302852 0.00010793 deg
peri 184.9965561057019 0.00010901 deg
i 2.383882354712751 3.7789e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      10984 days (30.07 yr)  
   first obs. used      1991-07-13  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:42:13  

Additional Information
 Jupiter MOID = 2.28975 au 
 T_jup = 3.507 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.100243617248351E-15 -2.66757728649435E-15 -5.241286305002952E-14 -9.412682918430139E-16 -9.250803534262448E-15 2.188504300870463E-16
q -2.66757728649435E-15 6.527286215376615E-15 2.379695953414786E-13 2.166997895969311E-15 5.263202076973152E-14 -4.712491700953358E-16
tp -5.241286305002952E-14 2.379695953414786E-13 3.803269258294382E-9 -9.280599386588269E-12 9.687799729707469E-10 4.790257723886433E-14
node -9.412682918430139E-16 2.166997895969311E-15 -9.280599386588269E-12 1.164854982978038E-8 -1.164046748749937E-8 4.749578704371122E-12
peri -9.250803534262448E-15 5.263202076973152E-14 9.687799729707469E-10 -1.164046748749937E-8 1.188340902040818E-8 -4.726601510623185E-12
i 2.188504300870463E-16 -4.712491700953358E-16 4.790257723886433E-14 4.749578704371122E-12 -4.726601510623185E-12 1.428037925866217E-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 15.54   n/a MPO636385  
diameter diameter 1.910 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21385 (1998 FV8)          Discovered 1998-Mar-22 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FV8 = 1991 NF9 = 1994 CG20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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