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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1932747161640455 2.8025e-08  
a 2.446319559690246 8.8706e-09 au
q 1.973507841144561 6.8834e-08 au
i 5.684791020299394 3.2554e-06 deg
node 114.0054277630522 3.7267e-05 deg
peri 174.3813026233528 3.8915e-05 deg
M 237.5577640155181 1.392e-05 deg
tp 2459475.831898261477
(2021-Sep-18.33189826)
5.5826e-05 TDB
period 1397.552748022496
3.83
7.6015e-06
2.081e-08
d
yr
n .2575931395143342 1.4011e-09 deg/d
Q 2.919131278235931 1.0585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1905  
   data-arc span      8558 days (23.43 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51056  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:04:19  

Additional Information
 Earth MOID = .957261 au 
 Jupiter MOID = 2.25713 au 
 T_jup = 3.466 
[ show covariance matrix ]

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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