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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
441825 (2009 SK1)
Classification: Amor [NEO]          SPK-ID: 2441825
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 166 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2228456583899817 5.5181e-08  
a 1.611045029669812 1.0987e-08 au
q 1.252030639337135 9.3234e-08 au
i 30.81701198212626 7.6952e-06 deg
node 184.3949774798216 6.53e-06 deg
peri 104.4452011455224 3.1233e-05 deg
M 319.0447495089034 2.0377e-05 deg
tp 2458685.470276539475
(2019-Jul-20.97027654)
4.1817e-05 TDB
period 746.8956772919946
2.04
7.6404e-06
2.092e-08
d
yr
n .481995024131409 4.9306e-09 deg/d
Q 1.970059420002489 1.3435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      713  
   data-arc span      3696 days (10.12 yr)  
   first obs. used      2009-09-17  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43996  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-01 08:16:32  

Additional Information
 Earth MOID = .405073 au 
 Jupiter MOID = 3.40403 au 
 T_jup = 4.162 
[ 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 18.4   n/a MPO428081  
rotation period rot_per 5.829 h n/a LCDB (Rev. 2019-January); 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:
[Warner, B.D. (2016) Minor Planet Bull. 43, 66-79.]

441825 (2009 SK1)          Discovered 2009-Sep-17 by CSS at Catalina
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin