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 ]  
21541 Friskop (1998 QP16)
Classification: Main-belt Asteroid          SPK-ID: 2021541
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04270738233995015 3.0191e-08  
a 2.964229746241932 1.7369e-08 au
q 2.837635253125725 8.6057e-08 au
i 9.520778812727228 5.35e-06 deg
node 169.7225938951168 2.5762e-05 deg
peri 123.0567024687604 7.9022e-05 deg
M 168.4167630855487 7.607e-05 deg
tp 2458328.434643954474
(2018-Jul-28.93464395)
0.00039189 TDB
period 1864.087175318285
5.10
1.6384e-05
4.486e-08
d
yr
n .1931240152105716 1.6974e-09 deg/d
Q 3.09082423935814 1.8111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1245  
   data-arc span      18201 days (49.83 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:53:08  

Additional Information
 Earth MOID = 1.83364 au 
 Jupiter MOID = 2.01441 au 
 T_jup = 3.243 
[ 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 14.0   n/a MPO412344  
diameter diameter 5.717 km 0.546 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21541 Friskop           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Andrew John Friskop (b. 1987) was awarded first place and Best in Category in the 2005 Intel International Science and Engineering Fair for his botany project. He attends the Hankinson High School, Hankinson, North Dakota, 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: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ show close-approach data ]
Alternate Designations
 1998 QP16 = 4243 T-1 
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-10 13:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin