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 ]  
9968 Serpe (1992 JS2)
Classification: Main-belt Asteroid          SPK-ID: 2009968
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05135515255178317 3.1851e-08  
a 2.56681891227533 1.0864e-08 au
q 2.434999535462628 8.2807e-08 au
i 12.99158003350344 3.5874e-06 deg
node 213.0867157144702 1.5751e-05 deg
peri 78.89397099206727 4.1815e-05 deg
M 225.9713082924729 4.0225e-05 deg
tp 2459559.724963959439
(2021-Dec-11.22496396)
0.00016818 TDB
period 1502.073805694635
4.11
9.5361e-06
2.611e-08
d
yr
n .2396686491936511 1.5216e-09 deg/d
Q 2.698638289088032 1.1422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2249  
   data-arc span      15397 days (42.15 yr)  
   first obs. used      1977-11-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44179  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 21:52:46  

Additional Information
 Earth MOID = 1.45803 au 
 Jupiter MOID = 2.37736 au 
 T_jup = 3.394 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457071.5 (2015-Feb-18.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05244977562968778 3.1917e-08  
q 2.431589274132453 8.3075e-08 au
tp 2456551.146883569992
(2013-Sep-15.64688357)
0.00016341 TDB
node 213.1481131916983 1.577e-05 deg
peri 77.83191355032864 4.1007e-05 deg
i 12.98369345907356 3.5859e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2249  
   data-arc span      15397 days (42.15 yr)  
   first obs. used      1977-11-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44179  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 21:52:46  

Additional Information
 Jupiter MOID = 2.37736 au 
 T_jup = 3.394 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.018716389405799E-15 -2.631323722241812E-15 2.425105288156169E-13 6.809609207202535E-15 3.382273520108025E-14 2.083663966470262E-15
q -2.631323722241812E-15 6.901399991133712E-15 -6.179047703560644E-13 -1.734034531914471E-14 -7.863467861396421E-14 -5.07938444833188E-15
tp 2.425105288156169E-13 -6.179047703560644E-13 2.670267267139335E-8 1.80615879083119E-11 6.198183628011385E-9 1.397424921351962E-11
node 6.809609207202535E-15 -1.734034531914471E-14 1.80615879083119E-11 2.486782008470166E-10 -2.377991263800716E-10 5.73614767228357E-12
peri 3.382273520108025E-14 -7.863467861396421E-14 6.198183628011385E-9 -2.377991263800716E-10 1.681559792940342E-9 -2.321918485406974E-12
i 2.083663966470262E-15 -5.07938444833188E-15 1.397424921351962E-11 5.73614767228357E-12 -2.321918485406974E-12 1.285851174850077E-11

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 13.0   n/a MPO458926  
diameter diameter 12.355 km 0.453 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.088   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

9968 Serpe           Discovered 1992 May 4 by H. Debehogne at the European Southern Observatory.
Jean Nicolas François Jules Serpe (1914-2001) was the theoretical-physics professor of the discoverer at the University of Liege and was a member of the Académie royale de Belgique.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110517/MPCPages.arcLast Updated: 2011-06-24

[ show close-approach data ]
Alternate Designations
 1992 JS2 = 1977 VT = 1985 SC2 = 1988 KR1 
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-22 23:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin