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22720 (1998 SF49)
Classification: Outer Main-belt Asteroid          SPK-ID: 2022720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06549364365119249 3.75e-08  
a 3.338881202772978 1.9061e-08 au
q 3.120205707084899 1.1935e-07 au
i 2.387154932294604 4.0544e-06 deg
node 18.97046943315217 9.2924e-05 deg
peri 125.5872352536379 9.8276e-05 deg
M 121.3646125676028 3.2369e-05 deg
tp 2458449.241410279174
(2018-Nov-26.74141028)
0.00020019 TDB
period 2228.434521214734
6.10
1.9082e-05
5.224e-08
d
yr
n .1615483859062468 1.3834e-09 deg/d
Q 3.557556698461056 2.0309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1727  
   data-arc span      9747 days (26.69 yr)  
   first obs. used      1994-01-08  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51113  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:10:25  

Additional Information
 Earth MOID = 2.13293 au 
 Jupiter MOID = 1.43767 au 
 T_jup = 3.156 
[ show covariance matrix ]

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 13.01   n/a E2021B10  
diameter diameter 14.818 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22720 (1998 SF49)          Discovered 1998-Sep-24 by Visnjan at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SF49 = 2000 AH158 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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