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 ]  
15423 (1998 QR91)
Classification: Main-belt Asteroid          SPK-ID: 2015423
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1955512104108292 3.558e-08  
a 2.18774130221703 6.6182e-09 au
q 1.759925842502726 7.8727e-08 au
i .586318736539684 3.1509e-06 deg
node 102.5627487682536 0.00041559 deg
peri 283.9445839223329 0.00041568 deg
M 245.3242441822994 1.01e-05 deg
tp 2459376.996970652841
(2021-Jun-11.49697065)		 3.4114e-05 TDB
period 1181.931686157692
3.24		 5.3632e-06
1.468e-08		 d
yr
n .3045861315135003 1.3821e-09 deg/d
Q 2.615556761931333 7.9123e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1338  
   data-arc span      12837 days (35.15 yr)  
   first obs. used      1984-03-05  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58367  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:32:10  

Additional Information
 Earth MOID = .764335 au 
 Jupiter MOID = 2.83245 au 
 T_jup = 3.650 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO309273  
diameter diameter 2.306 km 0.375 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.276   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15423 (1998 QR91)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-07 07:32 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin