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 ]  
23855 Brandonshih (1998 RD44)
Classification: Main-belt Asteroid          SPK-ID: 2023855
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09925534549012043 5.1088e-08  
a 2.737869745324411 1.5633e-08 au
q 2.466121537845289 1.4329e-07 au
i 5.849436173793849 5.8168e-06 deg
node 26.31802615214274 4.205e-05 deg
peri 338.0870741471198 4.7314e-05 deg
M 276.519172617039 2.2325e-05 deg
tp 2459384.208875413628
(2021-Jun-18.70887541)
0.0001035 TDB
period 1654.693652175044
4.53
1.4173e-05
3.88e-08
d
yr
n .2175629304716259 1.8634e-09 deg/d
Q 3.009617952803533 1.7185e-08 au
  Orbit Determination Parameters
   # obs. used (total)      903  
   data-arc span      10347 days (28.33 yr)  
   first obs. used      1991-01-07  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5668  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:14:01  

Additional Information
 Earth MOID = 1.4655 au 
 Jupiter MOID = 2.44635 au 
 T_jup = 3.337 
[ 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 14.9   n/a MPO474079  
diameter diameter 6.824 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23855 Brandonshih           Discovered 1998 Sept. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Brandon H. Shih (b. 1993) is a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his environmental sciences project. He attends the Great Neck South Middle School, Great Neck, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071026/MPCPages.arcLast Updated: 2007-10-28

Alternate Designations
 1998 RD44 = 1992 GR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-01 08:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin