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
JPL Small-Body Database Browser
Search: [ help ]  
15978 (1998 QL1)
Classification: Main-belt Asteroid          SPK-ID: 2015978
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199150358775939 4.1961e-08  
a 2.68089739076515 1.0034e-08 au
q 2.359417483967399 1.1468e-07 au
i 3.795535471689772 4.3787e-06 deg
node 206.9673441772842 5.2547e-05 deg
peri 171.7085677017062 5.4383e-05 deg
M 310.2648795640921 1.4216e-05 deg
tp 2459222.002885481715
(2021-Jan-07.50288548)
6.3611e-05 TDB
period 1603.314480281137
4.39
9.0014e-06
2.464e-08
d
yr
n .2245348647614503 1.2606e-09 deg/d
Q 3.0023772975629 1.1237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1340  
   data-arc span      12319 days (33.73 yr)  
   first obs. used      1986-12-30  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55702  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:42:02  

Additional Information
 Earth MOID = 1.36155 au 
 Jupiter MOID = 2.45597 au 
 T_jup = 3.363 
[ 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 14.5   n/a MPO435848  
diameter diameter 3.809 km 0.638 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.212   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15978 (1998 QL1)          Discovered 1998-Aug-17 by Visnjan at Visnjan
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QL1 = 2000 CL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-28 12:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin