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JPL Small-Body Database Browser
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2366 Aaryn (1981 AC1)
Classification: Main-belt Asteroid          SPK-ID: 2002366
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1268092217858764 2.8392e-08  
a 2.240395578809935 6.545e-09 au
q 1.956292758968529 6.3113e-08 au
i 1.083548974592905 3.9147e-06 deg
node 308.1471967686425 0.00018934 deg
peri 111.2526034174628 0.00019018 deg
M 319.8424758638221 1.8765e-05 deg
tp 2459137.131210364783
(2020-Oct-14.63121036)
6.4051e-05 TDB
period 1224.857278663979
3.35
5.3674e-06
1.47e-08
d
yr
n .2939117938644021 1.2879e-09 deg/d
Q 2.52449839865134 7.375e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2053  
   data-arc span      31276 days (85.63 yr)  
   first obs. used      1934-02-09  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:19:55  

Additional Information
 Earth MOID = .969015 au 
 Jupiter MOID = 2.76055 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456377.5 (2013-Mar-26.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .126981852497399 2.8559e-08  
q 1.956192887093783 6.3503e-08 au
tp 2456685.534547498866
(2014-Jan-28.03454750)
6.0654e-05 TDB
node 308.3011407436257 0.0001895 deg
peri 110.7946649801925 0.00019032 deg
i 1.082926791380365 3.9131e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2053  
   data-arc span      31276 days (85.63 yr)  
   first obs. used      1934-02-09  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:19:55  

Additional Information
 Jupiter MOID = 2.76055 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.156025173155142E-16 -1.806292071487312E-15 -2.981635308269762E-13 -1.70772243084764E-15 -9.935507679461699E-14 -2.075612840669308E-17
q -1.806292071487312E-15 4.032600611759738E-15 7.375749924600577E-13 3.622704222564654E-15 2.400228087479641E-13 6.928364420299266E-17
tp -2.981635308269762E-13 7.375749924600577E-13 3.67896090767598E-9 -1.929625295792788E-12 1.084809316235797E-9 7.750017845084508E-14
node -1.70772243084764E-15 3.622704222564654E-15 -1.929625295792788E-12 3.590933544678391E-8 -3.590298463643658E-8 2.323686291969318E-10
peri -9.935507679461699E-14 2.400228087479641E-13 1.084809316235797E-9 -3.590298463643658E-8 3.622261932526515E-8 -2.323067070980679E-10
i -2.075612840669308E-17 6.928364420299266E-17 7.750017845084508E-14 2.323686291969318E-10 -2.323067070980679E-10 1.531201243710471E-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 13.9   n/a MPO337267  

2366 Aaryn (1981 AC1)          Discovered 1981-Jan-10 by Thomas, N. G. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 AC1 = 1934 CC1 = 1949 PJ = 1971 DR = 1973 YM1 = 1976 QP1 = 1976 SM8 = 1978 ET2 = 1979 OK7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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