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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492653883523927 5.4216e-08  
a 2.480291655252275 9.2565e-09 au
q 2.110069958103845 1.3436e-07 au
i 4.732595301176523 5.6967e-06 deg
node 77.66255690264873 6.5276e-05 deg
peri 348.5726845046731 6.7785e-05 deg
M 315.4209261998911 1.6749e-05 deg
tp 2459177.177438998402
(2020-Nov-23.67743900)
6.6319e-05 TDB
period 1426.765354628555
3.91
7.987e-06
2.187e-08
d
yr
n .2523189947331758 1.4125e-09 deg/d
Q 2.850513352400704 1.0638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      25488 days (69.78 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52246  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:05:44  

Additional Information
 Earth MOID = 1.12414 au 
 Jupiter MOID = 2.43751 au 
 T_jup = 3.459 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457062.5 (2015-Feb-09.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496831422009892 5.4694e-08  
q 2.109318615105504 1.357e-07 au
tp 2457745.501063733914
(2016-Dec-23.00106373)
6.677e-05 TDB
node 77.69605561742232 6.53e-05 deg
peri 347.6814484939223 6.7781e-05 deg
i 4.732521172897873 5.7019e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      25488 days (69.78 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52246  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:05:44  

Additional Information
 Jupiter MOID = 2.43751 au 
 T_jup = 3.459 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.991382247969941E-15 -7.409832182862362E-15 -1.759406687663962E-12 -6.865563945555491E-14 -4.276882037438029E-13 -1.101131088260758E-15
q -7.409832182862362E-15 1.841501663874786E-14 4.300826810901883E-12 1.661268791414235E-13 1.036023756508492E-12 2.962755510198349E-15
tp -1.759406687663962E-12 4.300826810901883E-12 4.458268792258577E-9 5.50109046260063E-11 1.24660089891732E-9 -4.249834583943303E-13
node -6.865563945555491E-14 1.661268791414235E-13 5.50109046260063E-11 4.264106063185075E-9 -4.232521519146272E-9 -2.058115696778426E-10
peri -4.276882037438029E-13 1.036023756508492E-12 1.24660089891732E-9 -4.232521519146272E-9 4.594311298473996E-9 2.049660426690597E-10
i -1.101131088260758E-15 2.962755510198349E-15 -4.249834583943303E-13 -2.058115696778426E-10 2.049660426690597E-10 3.251188035908785E-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 14.9   n/a MPO395171  
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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