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 ]  
26355 Grueber (1998 YL8)
Classification: Main-belt Asteroid          SPK-ID: 2026355
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2557800440590512 5.626e-08  
a 2.516451486237471 1.1027e-08 au
q 1.872793414215186 1.4135e-07 au
i 12.15461779072726 4.292e-06 deg
node 94.55043735612554 1.7587e-05 deg
peri 277.9856569201747 2.231e-05 deg
M 192.0739153369875 1.954e-05 deg
tp 2459680.637830201350
(2022-Apr-11.13783020)
8.064e-05 TDB
period 1458.079722181582
3.99
9.5841e-06
2.624e-08
d
yr
n .2469000799636437 1.6229e-09 deg/d
Q 3.160109558259756 1.3848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2075  
   data-arc span      10750 days (29.43 yr)  
   first obs. used      1991-01-11  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42918  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:27:06  

Additional Information
 Earth MOID = .919445 au 
 Jupiter MOID = 2.42895 au 
 T_jup = 3.382 
[ 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 12.8   n/a MPO502354  
diameter diameter 5.570 km 0.374 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.539 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Fauerbach, M.; Fauerbach, M. (2019) Minor Planet Bull. 46, 236-237.]
geometric albedo albedo 0.519   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

26355 Grueber           Discovered 1998 Dec. 23 by E. Meyer at Linz.
Johannes Grueber (1623-1680) was a Jesuit priest, missionary, mathematician and astronomer at the Chinese imperial court from 1659 to 1661. He returned to Europe from China by the overland route and published the very first travelogue describing Tibet.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

Alternate Designations
 1998 YL8 = 1991 AU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-09 18:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin