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 ]  
21671 Warrener (1999 RP12)
Classification: Main-belt Asteroid          SPK-ID: 2021671
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05176490550794315 1.9552e-08  
a 2.602579058420813 1.023e-08 au
q 2.467856799384708 5.2771e-08 au
i 14.66909161219014 4.1062e-07 deg
node 175.4421056061693 3.8742e-06 deg
peri 328.886409799142 2.3958e-05 deg
M 267.3490587338785 2.4548e-05 deg
tp 2459791.185942361851
(2022-Jul-30.68594236)
0.00010556 TDB
period 1533.572539129956
4.20
9.042e-06
2.476e-08
d
yr
n .2347459874341773 1.3841e-09 deg/d
Q 2.737301317456918 1.0759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1925  
   data-arc span      14055 days (38.48 yr)  
   first obs. used      1982-08-21  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:51:28  

Additional Information
 Earth MOID = 1.4857 au 
 Jupiter MOID = 2.24828 au 
 T_jup = 3.366 
[ 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 13.87   n/a E2021B10  
diameter diameter 4.197 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.516737 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.252   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21671 Warrener           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Stephen Gerald Warrener (b. 1987) was awarded second place in the 2006 Intel International Science and Engineering Fair for his engineering project. He attends the East Noble High School, Kendallville, Indiana, 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 RP12 = 1982 QW3 = 1989 EZ5 = 1998 KO49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-05 05:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin