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 ]  
277094 (2005 EN261)
Classification: Main-belt Asteroid          SPK-ID: 2277094
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1837520888192366 1.2133e-07  
a 3.143751630561546 4.8318e-08 au
q 2.566080701716981 4.0313e-07 au
i 13.11503320428 1.1449e-05 deg
node 181.4698681676384 3.0071e-05 deg
peri 323.6139565865251 4.1082e-05 deg
M 208.3119209450801 2.1287e-05 deg
tp 2459458.366520429282
(2021-Aug-31.86652043)
0.00012267 TDB
period 2035.96715891383
5.57
4.6937e-05
1.285e-07
d
yr
n .1768201409457197 4.0764e-09 deg/d
Q 3.72142255940611 5.7196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      5311 days (14.54 yr)  
   first obs. used      2005-03-13  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55942  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 05:21:25  

Additional Information
 Earth MOID = 1.59024 au 
 Jupiter MOID = 1.35742 au 
 T_jup = 3.143 
[ 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 16.6   n/a MPO455056  
diameter diameter 3.440 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

277094 (2005 EN261)          Discovered 2005-Mar-13 by Spacewatch at Kitt Peak
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 EN261 = 2010 FF39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-14 16:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin