Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1476829452159951 4.9407e-08  
a 3.199444827585327 1.6163e-08 au
q 2.726941392391444 1.5953e-07 au
i 5.420558582479822 5.2989e-06 deg
node 32.08820794217355 3.9829e-05 deg
peri 329.641889892803 4.1542e-05 deg
M 49.89800130766165 1.1943e-05 deg
tp 2458310.771635858124
(2018-Jul-11.27163586)
6.9109e-05 TDB
period 2090.308396281599
5.72
1.5839e-05
4.336e-08
d
yr
n .1722233908835632 1.305e-09 deg/d
Q 3.67194826277921 1.8549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      40199 days (110.06 yr)  
   first obs. used      1909-10-05  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50422  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:56:06  

Additional Information
 Earth MOID = 1.72535 au 
 Jupiter MOID = 1.78483 au 
 T_jup = 3.170 
[ 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 12.8   n/a MPO337310  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin