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120677 (1997 AW20)
Classification: Main-belt Asteroid          SPK-ID: 2120677
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283038263599472 2.5326e-08  
a 2.152639953160043 7.0363e-09 au
q 1.876448010394312 5.2077e-08 au
i 2.380192303309696 3.6991e-06 deg
node 285.3177343069244 9.4057e-05 deg
peri 325.2207424066092 9.6145e-05 deg
M 98.09732895563461 2.0498e-05 deg
tp 2458886.152360654511
(2020-Feb-06.65236065)
6.5503e-05 TDB
period 1153.600728675864
3.16
5.6561e-06
1.549e-08
d
yr
n .3120663770845727 1.5301e-09 deg/d
Q 2.428831895925774 7.9391e-09 au
  Orbit Determination Parameters
   # obs. used (total)      800  
   data-arc span      9235 days (25.28 yr)  
   first obs. used      1995-08-25  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53329  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:40  

Additional Information
 Earth MOID = .861192 au 
 Jupiter MOID = 2.59886 au 
 T_jup = 3.692 
[ 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 16.74   n/a E2021B55  
diameter diameter 1.205 km 0.318 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.254   0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120677 (1997 AW20)          Discovered 1997-Jan-11 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1997 AW20 = 1999 XN163 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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