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6644 Jugaku (1991 AA)
Classification: Main-belt Asteroid          SPK-ID: 2006644
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481717945646724 4.4221e-08  
a 3.198940714928759 1.4817e-08 au
q 2.724947928491769 1.4097e-07 au
i 5.420515414275282 4.1845e-06 deg
node 32.06225362357904 3.7747e-05 deg
peri 329.6462000480855 3.9127e-05 deg
M 153.2111808740623 1.1514e-05 deg
tp 2458311.102973265231
(2018-Jul-11.60297327)
6.5065e-05 TDB
period 2089.814384288986
5.72
1.452e-05
3.975e-08
d
yr
n .1722641028344162 1.1969e-09 deg/d
Q 3.672933501365749 1.7013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2350  
   data-arc span      40713 days (111.47 yr)  
   first obs. used      1909-10-05  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47233  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:00:07  

Additional Information
 Earth MOID = 1.72261 au 
 Jupiter MOID = 1.78834 au 
 T_jup = 3.171 
[ 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 12.87   n/a MPCxxxxx  
diameter diameter 14.483 km 0.427 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.160   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6644 Jugaku (1991 AA)          Discovered 1991-Jan-05 by Takahashi, A., Watanabe, K. at Kitami
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 AA = 1972 TU1 = 1976 JW3 = 1984 WV3 = 1989 TH14 = A909 TE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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