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 ]  
18453 Nishiyamayukio (1994 TT)
Classification: Main-belt Asteroid          SPK-ID: 2018453
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2365586086941959 3.0178e-08  
a 2.544498000121255 8.4947e-09 au
q 1.942575093387407 7.7365e-08 au
i 5.92911916397128 5.2455e-06 deg
node 358.1792512306315 3.8436e-05 deg
peri 34.00876767946328 4.1239e-05 deg
M 104.7757429527112 1.5585e-05 deg
tp 2458569.020818761955
(2019-Mar-26.52081876)
6.2989e-05 TDB
period 1482.523539019933
4.06
7.424e-06
2.033e-08
d
yr
n .242829196653423 1.216e-09 deg/d
Q 3.146420906855103 1.0504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1927  
   data-arc span      23778 days (65.10 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47246  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:49:20  

Additional Information
 Earth MOID = .951369 au 
 Jupiter MOID = 2.32166 au 
 T_jup = 3.397 
[ 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 14.5   n/a MPO449086  
diameter diameter 3.711 km 0.343 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18453 Nishiyamayukio           Discovered 1994 Oct. 2 by K. Endate and K. Watanabe at Kitami.
Yukio Nishiyama (b. 1950) is the president of a ship-building design company who spends his evenings as an amateur astronomer. The private observatory he built in 1989 houses a 0.31-m telescope and a 0.25-m astrocamera.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

[ show close-approach data ]
Alternate Designations
 1994 TT = 1990 TU15 = 1998 RY68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-03 18:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin