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 ]  
46580 Ryouichiirie (1992 GC)
Classification: Main-belt Asteroid          SPK-ID: 2046580
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1337672369522152 3.3562e-08  
a 2.658529652792262 1.262e-08 au
q 2.302905486782709 8.6792e-08 au
i 13.64432390049292 5.4871e-06 deg
node 27.0182659010681 1.5094e-05 deg
peri 230.7085495461469 2.6512e-05 deg
M 128.6185623021993 2.135e-05 deg
tp 2458434.831702185015
(2018-Nov-12.33170218)
9.4092e-05 TDB
period 1583.290806306209
4.33
1.1273e-05
3.086e-08
d
yr
n .2273745281448795 1.619e-09 deg/d
Q 3.014153818801815 1.4308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1463  
   data-arc span      16542 days (45.29 yr)  
   first obs. used      1975-06-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 17:56:32  

Additional Information
 Earth MOID = 1.31485 au 
 Jupiter MOID = 2.07615 au 
 T_jup = 3.334 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457115.5 (2015-Apr-03.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336682372419956 3.3332e-08  
q 2.30376432367476 8.6157e-08 au
tp 2456853.309954939523
(2014-Jul-14.80995494)
9.6249e-05 TDB
node 27.03829709086698 1.5084e-05 deg
peri 231.1664426241345 2.6602e-05 deg
i 13.64900907374613 5.4893e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1463  
   data-arc span      16542 days (45.29 yr)  
   first obs. used      1975-06-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 17:56:32  

Additional Information
 Jupiter MOID = 2.07615 au 
 T_jup = 3.334 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.111013115044703E-15 -2.850054523287396E-15 -8.842233126673967E-13 -8.002046117421546E-16 -2.380381892946785E-13 1.605072083403918E-15
q -2.850054523287396E-15 7.423084815789684E-15 2.133642337806133E-12 -8.812196247835034E-17 5.863230952894409E-13 -3.180214938474701E-15
tp -8.842233126673967E-13 2.133642337806133E-12 9.263942628796916E-9 -8.770690465372381E-12 2.116521399085508E-9 -8.09289853543606E-12
node -8.002046117421546E-16 -8.812196247835034E-17 -8.770690465372381E-12 2.275394886659848E-10 -2.229465238890839E-10 -3.103569455590022E-11
peri -2.380381892946785E-13 5.863230952894409E-13 2.116521399085508E-9 -2.229465238890839E-10 7.076588422600114E-10 2.839562004677743E-11
i 1.605072083403918E-15 -3.180214938474701E-15 -8.09289853543606E-12 -3.103569455590022E-11 2.839562004677743E-11 3.013215727191587E-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 MPO436107  
diameter diameter 4.282 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.167   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46580 Ryouichiirie           Discovered 1992 Apr. 2 by T. Seki at Geisei.
Ryouichi Irie (b. 1949) is a Japanese amateur astronomer in Toyooka city, Hyogo prefecture, and an independent discoverer of C/1988 P1 (Machholz). He is also an award-winning astro-photographer and exhibits his works widely. The name was suggested by M. Sugano.
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 2013-07-22Last Updated: 2014-08-13

Alternate Designations
 1992 GC = 1975 LZ = 1989 SL6 = 1998 VT21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-24 22:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin