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 ]  
180426 (2004 BK81)
Classification: Main-belt Asteroid          SPK-ID: 2180426
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .146615699384086 4.6473e-08  
a 2.413451233635778 1.4824e-08 au
q 2.059601393086883 1.1394e-07 au
i 2.272160822077737 5.8419e-06 deg
node 196.3926394291412 0.00012114 deg
peri 227.0804416585989 0.00012308 deg
M 234.138551582503 2.6279e-05 deg
tp 2459679.291512618442
(2022-Apr-09.79151262)
0.00010303 TDB
period 1369.48165391268
3.75
1.2617e-05
3.454e-08
d
yr
n .2628731819600952 2.4219e-09 deg/d
Q 2.767301074184672 1.6997e-08 au
  Orbit Determination Parameters
   # obs. used (total)      343  
   data-arc span      9055 days (24.79 yr)  
   first obs. used      1995-09-29  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52489  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:05:51  

Additional Information
 Earth MOID = 1.07291 au 
 Jupiter MOID = 2.53049 au 
 T_jup = 3.502 
[ 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 17.13   n/a E2021B55  

180426 (2004 BK81)          Discovered 2004-Jan-26 by LONEOS at Anderson Mesa
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 BK81 = 2006 RN9 
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 14:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin