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 ]  
277231 (2005 QE181)
Classification: Main-belt Asteroid          SPK-ID: 2277231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354305396314378 5.02e-08  
a 2.23953831665453 1.6597e-08 au
q 1.936236433904725 1.1428e-07 au
i 4.422811574790686 5.3522e-06 deg
node 282.4246388706334 7.95e-05 deg
peri .8285316741990627 8.284e-05 deg
M 211.2053049089448 2.2613e-05 deg
tp 2459506.465750412641
(2021-Oct-18.96575041)
7.7699e-05 TDB
period 1224.154329138448
3.35
1.3608e-05
3.726e-08
d
yr
n .2940805676465366 3.2691e-09 deg/d
Q 2.542840199404335 1.8845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      5815 days (15.92 yr)  
   first obs. used      2002-12-05  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 08:06:46  

Additional Information
 Earth MOID = .919774 au 
 Jupiter MOID = 2.58543 au 
 T_jup = 3.620 
[ 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 16.9   n/a MPO433793  

277231 (2005 QE181)          Discovered 2005-Aug-30 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1940-Jan-07 22:16 00:02 Hebe 0.0317601224986542 0.0317484761118433 0.0317718252083916 7.62625661416084 7.62625658849449 2429636.427824751 2.1653226054154 2195.70529886826 51.9545441338502 -74.6856489163926 88187.638530645 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 08:06:50 2019-Jul-14 08:06
2124-Mar-15 20:04 00:07 Eunom 0.0157373585707759 0.0156915686717874 0.0157832602313549 5.05790315264174 5.05790297628521 2496909.336408139 6.52338663825337 3097.0654266611 63.5238004904555 -42.4734072208654 25013.7699632122 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 08:06:50 2019-Jul-14 08:06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-23 20:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin