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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1495541919520137 5.1782e-08  
a 2.481057116416239 8.3815e-09 au
q 2.110004624183815 1.2737e-07 au
i 4.732151565451893 5.1944e-06 deg
node 77.66162843451603 4.5742e-05 deg
peri 348.5730591662218 4.9257e-05 deg
M 55.31341924372947 1.4736e-05 deg
tp 2459177.178314356467
(2020-Nov-23.67831436)
5.8759e-05 TDB
period 1427.4258925084
3.91
7.2332e-06
1.98e-08
d
yr
n .2522022347285405 1.278e-09 deg/d
Q 2.852109608648663 9.635e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      25631 days (70.17 yr)  
   first obs. used      1951-02-04  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4974  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:52:12  

Additional Information
 Earth MOID = 1.12378 au 
 Jupiter MOID = 2.43705 au 
 T_jup = 3.458 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1493684213216209 5.2246e-08  
q 2.110519893459206 1.2852e-07 au
tp 2457745.541706579320
(2016-Dec-23.04170658)
6.1272e-05 TDB
node 77.68757456257094 4.5762e-05 deg
peri 347.6395207039727 4.927e-05 deg
i 4.731865928633263 5.1961e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      25631 days (70.17 yr)  
   first obs. used      1951-02-04  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4974  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:52:12  

Additional Information
 Jupiter MOID = 2.43705 au 
 T_jup = 3.458 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.729638632198895E-15 -6.704962205434017E-15 -1.332734219113282E-12 -1.469749513436811E-14 -3.89582133063514E-13 -3.876515917265116E-15
q -6.704962205434017E-15 1.651712749015183E-14 3.146419642845742E-12 3.368228600177457E-14 9.190687242292988E-13 9.724473380235848E-15
tp -1.332734219113282E-12 3.146419642845742E-12 3.754198013587538E-9 2.012756056928294E-11 1.13114860588324E-9 1.026443726317356E-12
node -1.469749513436811E-14 3.368228600177457E-14 2.012756056928294E-11 2.094178986070905E-9 -2.08025159407412E-9 -1.007187972621103E-10
peri -3.89582133063514E-13 9.190687242292988E-13 1.13114860588324E-9 -2.08025159407412E-9 2.42756938106371E-9 1.006821308094082E-10
i -3.876515917265116E-15 9.724473380235848E-15 1.026443726317356E-12 -1.007187972621103E-10 1.006821308094082E-10 2.699942371871256E-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 14.99   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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