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 ]  
12257 Lassine (1989 GL4)
Classification: Main-belt Asteroid          SPK-ID: 2012257
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263381751932179 3.6483e-08  
a 2.539350147170157 1.1561e-08 au
q 2.21853328340005 9.3074e-08 au
i 13.50563791828731 4.2705e-06 deg
node 204.4649413897899 1.7497e-05 deg
peri 28.61357418212581 2.6013e-05 deg
M 219.3950031632531 2.215e-05 deg
tp 2459577.772095571716
(2021-Dec-29.27209557)
9.2605e-05 TDB
period 1478.026806167566
4.05
1.0094e-05
2.764e-08
d
yr
n .2435679775886191 1.6633e-09 deg/d
Q 2.860167010940264 1.3021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1661  
   data-arc span      11550 days (31.62 yr)  
   first obs. used      1989-04-03  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:48:39  

Additional Information
 Earth MOID = 1.21809 au 
 Jupiter MOID = 2.13251 au 
 T_jup = 3.397 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457056.5 (2015-Feb-03.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265822846344209 3.6412e-08  
q 2.217718588485287 9.2906e-08 au
tp 2456623.616441138644
(2013-Nov-27.11644114)
8.5711e-05 TDB
node 204.4755625886372 1.7494e-05 deg
peri 28.91444624289122 2.6011e-05 deg
i 13.50651956861645 4.2711e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1661  
   data-arc span      11550 days (31.62 yr)  
   first obs. used      1989-04-03  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:48:39  

Additional Information
 Jupiter MOID = 2.13251 au 
 T_jup = 3.397 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.325869271251412E-15 -3.36293269973756E-15 1.906788991033284E-13 -8.572331786222999E-15 4.013952395542637E-14 -3.630858981129307E-16
q -3.36293269973756E-15 8.63157659534344E-15 -2.837934107719653E-13 2.085626320037142E-14 -5.073977281049409E-14 1.06709355056329E-15
tp 1.906788991033284E-13 -2.837934107719653E-13 7.346439014536056E-9 1.143038972594944E-11 1.666506868588345E-9 -8.508527736867729E-12
node -8.572331786222999E-15 2.085626320037142E-14 1.143038972594944E-11 3.060480468036338E-10 -2.948393294236104E-10 6.139688859806029E-13
peri 4.013952395542637E-14 -5.073977281049409E-14 1.666506868588345E-9 -2.948393294236104E-10 6.765468191723291E-10 -2.434730468182572E-12
i -3.630858981129307E-16 1.06709355056329E-15 -8.508527736867729E-12 6.139688859806029E-13 -2.434730468182572E-12 1.824260203656863E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO358749  
diameter diameter 4.071 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12257 Lassine           Discovered 1989 Apr. 3 by E. W. Elst at the European Southern Observatory.
George Lassine (1953-2003) was a member of the Belgian astronomical club Astronomie Centre Ardenne-Neufchâteau. His observations of sunspots have been sent regularly to the Sunspot Index Data Center. A brilliant observer, he was esteemed for his great heart and sense of humor.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031110/MPCPages.arcLast Updated: 2003-11-12

Alternate Designations
 1989 GL4 = 1993 FK32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-18 08:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin