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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1196297129951281 4.1229e-08  
a 2.679758015433517 9.1825e-09 au
q 2.359179333150811 1.1316e-07 au
i 3.796204886789045 4.1173e-06 deg
node 206.9554686399617 4.7972e-05 deg
peri 171.8515074534659 4.9754e-05 deg
M 355.0632969350049 1.2845e-05 deg
tp 2459222.472339454607
(2021-Jan-07.97233945)		 5.7182e-05 TDB
period 1602.292481341787
4.39		 8.2357e-06
2.255e-08		 d
yr
n .2246780810570427 1.1548e-09 deg/d
Q 3.000336697716222 1.0281e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1643  
   data-arc span      12463 days (34.12 yr)  
   first obs. used      1986-12-30  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51925  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:14:48  

Additional Information
 Earth MOID = 1.35996 au 
 Jupiter MOID = 2.45883 au 
 T_jup = 3.364 
[ 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 14.58   n/a E2021B10  
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 ]
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