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17561 (1994 AE11)
Classification: Main-belt Asteroid          SPK-ID: 2017561
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494224774792342 5.1809e-08  
a 2.480725926355503 8.3584e-09 au
q 2.110049712492495 1.274e-07 au
i 4.732433801594393 5.1974e-06 deg
node 77.66378548207234 4.5757e-05 deg
peri 348.5682238455026 4.9277e-05 deg
M 5.887264409876681 1.4826e-05 deg
tp 2459177.161247108209
(2020-Nov-23.66124711)
5.8812e-05 TDB
period 1427.140086820153
3.91
7.2128e-06
1.975e-08
d
yr
n .2522527419169656 1.2749e-09 deg/d
Q 2.851402140218511 9.6073e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1329  
   data-arc span      25599 days (70.09 yr)  
   first obs. used      1951-02-04  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:06:11  

Additional Information
 Earth MOID = 1.12353 au 
 Jupiter MOID = 2.43707 au 
 T_jup = 3.458 
[ 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 14.99   n/a MPCxxxxx  
diameter diameter 5.778 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17561 (1994 AE11)          Discovered 1994-Jan-08 by Spacewatch at Kitt Peak
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 AE11 = 1977 XD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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