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20182 (1997 AS)
Classification: Main-belt Asteroid          SPK-ID: 2020182
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 .1932747160497894 2.8148e-08  
a 2.446319559646021 8.8833e-09 au
q 1.973507841388391 6.9099e-08 au
i 5.684791031860474 3.2713e-06 deg
node 114.0054295948208 3.8811e-05 deg
peri 174.3813012984836 4.0449e-05 deg
M 237.557763604902 1.4034e-05 deg
tp 2459475.831899842636
(2021-Sep-18.33189984)
5.6239e-05 TDB
period 1397.552747984598
3.83
7.6124e-06
2.084e-08
d
yr
n .2575931395213194 1.4031e-09 deg/d
Q 2.919131277903652 1.06e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1795  
   data-arc span      8433 days (23.09 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5175  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:02:30  

Additional Information
 Earth MOID = .957261 au 
 Jupiter MOID = 2.25713 au 
 T_jup = 3.466 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456810.5 (2014-Jun-02.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1943453154309686 2.8149e-08  
q 1.970540852885109 6.915e-08 au
tp 2456680.735576339944
(2014-Jan-23.23557634)
4.6728e-05 TDB
node 114.0660358065403 3.8789e-05 deg
peri 174.3291500636875 4.0407e-05 deg
i 5.686923045324217 3.273e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1795  
   data-arc span      8433 days (23.09 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5175  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:02:30  

Additional Information
 Jupiter MOID = 2.25713 au 
 T_jup = 3.466 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.92341296807384E-16 -1.9361748038639E-15 7.73481362623903E-14 3.614129903075346E-15 8.45753763350264E-15 -1.581919008366133E-16
q -1.9361748038639E-15 4.781723174687868E-15 -2.325700888497097E-14 -7.985199180273585E-15 1.905574858700872E-14 4.418691119241691E-16
tp 7.73481362623903E-14 -2.325700888497097E-14 2.183486643320543E-9 2.414675838603576E-12 5.468760674323903E-10 -1.516435683940373E-13
node 3.614129903075346E-15 -7.985199180273585E-15 2.414675838603576E-12 1.504567700980785E-9 -1.496176704517811E-9 1.927651904928737E-12
peri 8.45753763350264E-15 1.905574858700872E-14 5.468760674323903E-10 -1.496176704517811E-9 1.63271118991489E-9 -1.95791743716302E-12
i -1.581919008366133E-16 4.418691119241691E-16 -1.516435683940373E-13 1.927651904928737E-12 -1.95791743716302E-12 1.071243230563429E-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 14.4   n/a MPO452455  
diameter diameter 4.023 km 0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20182 (1997 AS)          Discovered 1997-Jan-02 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 AS = 1998 KL8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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