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
JPL Small-Body Database Browser
Search: [ help ]  
20070 Koichiyuko (1993 XL)
Classification: Main-belt Asteroid          SPK-ID: 2020070
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172384080731499 1.2354e-08  
a 2.27256336436567 5.6488e-09 au
q 1.77887531684551 2.85e-08 au
i 7.155696333501163 9.0133e-07 deg
node 100.7151579346573 5.1763e-06 deg
peri 228.8216999332047 6.033e-06 deg
M 97.89564958687012 3.9787e-06 deg
tp 2459056.222431835699
(2020-Jul-25.72243184)
1.3963e-05 TDB
period 1251.331648097856
3.43
4.6656e-06
1.277e-08
d
yr
n .2876935147826195 1.0727e-09 deg/d
Q 2.76625141188583 6.876e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2376  
   data-arc span      9979 days (27.32 yr)  
   first obs. used      1993-12-08  
   last obs. used      2021-04-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44022  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:18:32  

Additional Information
 Earth MOID = .776151 au 
 Jupiter MOID = 2.59286 au 
 T_jup = 3.570 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.16   n/a E2021B10  
diameter diameter 3.524 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.357   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20070 Koichiyuko           Discovered 1993 Dec. 8 by T. Kobayashi at Oizumi.
Koichi Takahashi (b. 1958) has been director of the Hiroshima Chapter of the Young Astronauts Club of Japan since 1998. His wife Yuko (b. 1958) enthusiastically helps in his activities. Koichi is a medical doctor and Yuko a pharmacist.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

Alternate Designations
 1993 XL = 1998 FK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 17:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin