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 ]  
21605 Reynoso (1999 CL81)
Classification: Main-belt Asteroid          SPK-ID: 2021605
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111173318171769 3.3232e-08  
a 3.059991832396094 1.6223e-08 au
q 2.719802386810109 1.0406e-07 au
i 10.87765839392881 3.9478e-06 deg
node 192.5423639128745 2.0131e-05 deg
peri 267.5735195763178 2.7541e-05 deg
M 76.59674256769812 1.7935e-05 deg
tp 2458784.506420428167
(2019-Oct-28.00642043)
9.7389e-05 TDB
period 1955.144352431179
5.35
1.5548e-05
4.257e-08
d
yr
n .1841296268238956 1.4643e-09 deg/d
Q 3.400181277982079 1.8026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1769  
   data-arc span      10692 days (29.27 yr)  
   first obs. used      1991-10-07  
   last obs. used      2021-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:53:35  

Additional Information
 Earth MOID = 1.76387 au 
 Jupiter MOID = 1.85177 au 
 T_jup = 3.197 
[ 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 13.41   n/a E2021B10  
diameter diameter 8.024 km 0.239 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.172 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.158   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21605 Reynoso           Discovered 1999 Feb. 12 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jeremy Rosendo Reynoso (b. 1989) was awarded second place in the 2006 Intel International Science and Engineering Fair for his zoology team project. He attends the Corvallis High School, Corvallis, Montana, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 CL81 = 1991 TA8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-11 04:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin