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 ]  
285263 (1998 QE2)
Classification: Amor [NEO, PHA]          SPK-ID: 2285263
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 152 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .57158170048781 6.3179e-09  
a 2.423772197211587 2.1641e-08 au
q 1.038388363134312 1.2898e-08 au
i 12.85875990587069 2.0619e-06 deg
node 250.1301879103125 2.2428e-06 deg
peri 345.7035166073711 6.3199e-06 deg
M 310.8126758839686 9.166e-06 deg
tp 2459188.815827078059
(2020-Dec-05.31582708)
3.7591e-05 TDB
period 1378.275784797276
3.77
1.8459e-05
5.054e-08
d
yr
n .2611959115663856 3.4982e-09 deg/d
Q 3.809156031288861 3.4011e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1851  
   # delay obs. used      4  
   # Doppler obs. used      0  
   data-arc span      7831 days (21.44 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .26106  
   source      ORB  
   producer      Giorgini  
   solution date      2020-Jan-28 15:47:21  

Additional Information
 Earth MOID = .0343518 au 
 Jupiter MOID = 1.24691 au 
 T_jup = 3.239 
[ 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 17.2   n/a MPO427557  
rotation period rot_per 4.749 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm]
[Hill, K. (2014) Minor Planet Bull. 41, 2-3.]

285263 (1998 QE2)          Discovered 1998-Aug-19 by LINEAR at Socorro
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ 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 2020-Feb-17 13:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin