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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1932747165049814 2.8031e-08  
a 2.446319559727832 8.8713e-09 au
q 1.973507840340844 6.8848e-08 au
i 5.684791020279534 3.2563e-06 deg
node 114.0054277645319 3.7291e-05 deg
peri 174.3813024656419 3.8938e-05 deg
M 237.5577641132039 1.3921e-05 deg
tp 2459475.831897893206
(2021-Sep-18.33189789)
5.5829e-05 TDB
period 1397.552748054704
3.83
7.6021e-06
2.081e-08
d
yr
n .2575931395083977 1.4012e-09 deg/d
Q 2.919131279114819 1.0586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1901  
   data-arc span      8517 days (23.32 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:09:51  

Additional Information
 Earth MOID = .957261 au 
 Jupiter MOID = 2.25713 au 
 T_jup = 3.466 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456935.5 (2014-Oct-05.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1943034112096629 2.8034e-08  
q 1.970426582793031 6.8901e-08 au
tp 2456680.667434598949
(2014-Jan-23.16743460)
4.6138e-05 TDB
node 114.0660296663163 3.7271e-05 deg
peri 174.3028955190294 3.89e-05 deg
i 5.686923965100502 3.258e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1901  
   data-arc span      8517 days (23.32 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:09:51  

Additional Information
 Jupiter MOID = 2.25713 au 
 T_jup = 3.466 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.859270601109684E-16 -1.921341674837345E-15 9.5433708725126E-14 1.936006006107916E-15 1.605306568790789E-14 -1.110512147242702E-16
q -1.921341674837345E-15 4.747371529222489E-15 -6.486249216023494E-14 -4.169698479088665E-15 1.62806206038632E-15 3.351032479240108E-16
tp 9.5433708725126E-14 -6.486249216023494E-14 2.128704609711388E-9 1.101032675838368E-12 5.304042582445981E-10 -1.03482674159504E-13
node 1.936006006107916E-15 -4.169698479088665E-15 1.101032675838368E-12 1.389131794746128E-9 -1.381604401675752E-9 5.155332886930253E-12
peri 1.605306568790789E-14 1.62806206038632E-15 5.304042582445981E-10 -1.381604401675752E-9 1.513219375319622E-9 -5.158167996665934E-12
i -1.110512147242702E-16 3.351032479240108E-16 -1.03482674159504E-13 5.155332886930253E-12 -5.158167996665934E-12 1.061461015743016E-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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