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19996 (1990 WZ)
Classification: Main-belt Asteroid          SPK-ID: 2019996
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05821054867654531 3.3423e-08  
a 2.790618898160957 1.2823e-08 au
q 2.628175440951872 9.2127e-08 au
i 8.913428930577032 4.5083e-06 deg
node 190.2719425460102 2.4107e-05 deg
peri 246.3734645506015 4.6923e-05 deg
M 100.5786416016942 3.9841e-05 deg
tp 2458524.778819009190
(2019-Feb-10.27881901)
0.0001881 TDB
period 1702.743469482362
4.66
1.1736e-05
3.213e-08
d
yr
n .2114235094435223 1.4573e-09 deg/d
Q 2.953062355370043 1.357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1746  
   data-arc span      10761 days (29.46 yr)  
   first obs. used      1990-11-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4971  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:07:54  

Additional Information
 Earth MOID = 1.6574 au 
 Jupiter MOID = 2.21757 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05755692300991078 3.3411e-08  
q 2.632262358795689 9.206e-08 au
tp 2456830.322441099753
(2014-Jun-21.82244110)
0.00018953 TDB
node 190.325600086347 2.4144e-05 deg
peri 248.3496680922876 4.7281e-05 deg
i 8.903324537602753 4.5046e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1746  
   data-arc span      10761 days (29.46 yr)  
   first obs. used      1990-11-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4971  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:07:54  

Additional Information
 Jupiter MOID = 2.21757 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.11630203004743E-15 -3.04992423500465E-15 -2.840185314556897E-13 4.082803827312307E-15 -8.173013225396544E-14 -7.00192018115874E-16
q -3.04992423500465E-15 8.475106965521209E-15 7.604217049409682E-13 -1.184585346378082E-14 2.239257678439852E-13 1.941745830228575E-15
tp -2.840185314556897E-13 7.604217049409682E-13 3.592324829529491E-8 -3.630404701482015E-11 7.717947362393663E-9 -5.288751965496564E-12
node 4.082803827312307E-15 -1.184585346378082E-14 -3.630404701482015E-11 5.829386625048768E-10 -5.834653312899758E-10 -1.278830693737911E-11
peri -8.173013225396544E-14 2.239257678439852E-13 7.717947362393663E-9 -5.834653312899758E-10 2.235493126953987E-9 1.155901900511039E-11
i -7.00192018115874E-16 1.941745830228575E-15 -5.288751965496564E-12 -1.278830693737911E-11 1.155901900511039E-11 2.029148914937185E-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 14.0   n/a MPO467936  
diameter diameter 9.427 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19996 (1990 WZ)          Discovered 1990-Nov-18 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2070-Jun-05 20:00 < 00:01 David 0.0279858119357146 0.0279824436522008 0.0279891839845509 5.79997212433068 5.79997203125864 2477268.333152592 0.662752489540065 546.500272704811 30.0076425387857 72.3679725159874 132924.062371568 T 28 CATAB v2.0f-lin.ifort 2020-May-20 05:08:13 2020-May-20 05:08
2149-Sep-23 11:09 00:01 David 0.0394182442881956 0.0394108913609197 0.0394256111913326 6.01982711483553 6.01982705117038 2506231.964413268 1.11698653703182 1230.29874519026 31.5688646899554 72.7115164536563 178287.403698643 T 28 CATAB v2.0f-lin.ifort 2020-May-20 05:08:13 2020-May-20 05:08

Alternate Designations
 1990 WZ = 1997 GT16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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