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21090 (1992 DZ6)
Classification: Main-belt Asteroid          SPK-ID: 2021090
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390590486783165 3.4439e-08  
a 2.694541659309091 1.2339e-08 au
q 2.319841259541477 9.1203e-08 au
i 11.75996763117173 4.4413e-06 deg
node 351.3073976536699 1.6691e-05 deg
peri 251.1854101927564 2.2678e-05 deg
M 161.693221654141 1.5211e-05 deg
tp 2458670.870226617444
(2019-Jul-06.37022662)
6.7929e-05 TDB
period 1615.570001916837
4.42
1.1097e-05
3.038e-08
d
yr
n .2228315700173116 1.5306e-09 deg/d
Q 3.069242059076706 1.4055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1933  
   data-arc span      10731 days (29.38 yr)  
   first obs. used      1992-02-29  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:52  

Additional Information
 Earth MOID = 1.3406 au 
 Jupiter MOID = 2.05048 au 
 T_jup = 3.326 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457671.5 (2016-Oct-10.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1382859587361685 3.4465e-08  
q 2.323413733941654 9.125e-08 au
tp 2457055.556155209890
(2015-Feb-02.05615521)
6.9157e-05 TDB
node 351.3839425022038 1.6694e-05 deg
peri 251.5120712695459 2.2745e-05 deg
i 11.75617440623045 4.4404e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1933  
   data-arc span      10731 days (29.38 yr)  
   first obs. used      1992-02-29  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:52  

Additional Information
 Jupiter MOID = 2.05048 au 
 T_jup = 3.326 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.187829501363782E-15 -3.124066293754622E-15 -6.043118661029541E-13 3.789345415626149E-15 -1.637602964123196E-13 -8.168758174181871E-16
q -3.124066293754622E-15 8.326548500721957E-15 1.516828616621267E-12 -8.978534997617875E-15 4.230010673724757E-13 2.8488278488679E-15
tp -6.043118661029541E-13 1.516828616621267E-12 4.782653101851214E-9 -1.023325644403433E-11 1.077062720948367E-9 -1.030713477444144E-12
node 3.789345415626149E-15 -8.978534997617875E-15 -1.023325644403433E-11 2.78687612800732E-10 -2.745597889089608E-10 9.470273748106545E-12
peri -1.637602964123196E-13 4.230010673724757E-13 1.077062720948367E-9 -2.745597889089608E-10 5.173242680944168E-10 -9.371817254732544E-12
i -8.168758174181871E-16 2.8488278488679E-15 -1.030713477444144E-12 9.470273748106545E-12 -9.371817254732544E-12 1.971696206615539E-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 14.42   n/a E2021B10  
diameter diameter 3.977 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 24.1511 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.177   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21090 (1992 DZ6)          Discovered 1992-Feb-29 by UESAC at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 DZ6 = 1998 SS86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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