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 ]  
78250 (2002 PE9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2078250
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1698073018110375 4.9372e-08  
a 3.200419635427568 2.0872e-08 au
q 2.656965012472549 1.5665e-07 au
i 4.680470782221943 5.6638e-06 deg
node 205.1445539974409 4.8366e-05 deg
peri 189.2524279238221 5.1035e-05 deg
M 335.6316338261787 1.3212e-05 deg
tp 2459142.057448956506
(2020-Oct-19.55744896)
7.6323e-05 TDB
period 2091.263782759824
5.73
2.0458e-05
5.601e-08
d
yr
n .1721447112352851 1.684e-09 deg/d
Q 3.743874258382588 2.4417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      658  
   data-arc span      10655 days (29.17 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:18  

Additional Information
 Earth MOID = 1.6636 au 
 Jupiter MOID = 1.68919 au 
 T_jup = 3.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457603.5 (2016-Aug-03.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711315246012968 4.9979e-08  
q 2.654871357883148 1.5763e-07 au
tp 2457025.130539886327
(2015-Jan-02.63053989)
8.0976e-05 TDB
node 205.3506403362501 4.8223e-05 deg
peri 186.0519016246409 5.0811e-05 deg
i 4.676173542498787 5.6859e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      658  
   data-arc span      10655 days (29.17 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:18  

Additional Information
 Jupiter MOID = 1.68919 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.497902185604169E-15 -7.839698972235189E-15 -5.081038112831797E-13 -1.063555655855538E-14 -4.696499963977863E-14 -6.102766832049842E-16
q -7.839698972235189E-15 2.484687000771023E-14 1.210359669793844E-12 3.373121308764829E-14 8.770354976678959E-14 2.626734940917244E-15
tp -5.081038112831797E-13 1.210359669793844E-12 6.557036166453499E-9 2.086771803969783E-11 1.298349108122003E-9 3.721783494286055E-14
node -1.063555655855538E-14 3.373121308764829E-14 2.086771803969783E-11 2.325488195719547E-9 -2.314582348735109E-9 -7.72737291046824E-12
peri -4.696499963977863E-14 8.770354976678959E-14 1.298349108122003E-9 -2.314582348735109E-9 2.581794211070983E-9 7.70298099492827E-12
i -6.102766832049842E-16 2.626734940917244E-15 3.721783494286055E-14 -7.72737291046824E-12 7.70298099492827E-12 3.232922703353523E-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 15.0   n/a MPO449492  
diameter diameter 5.933 km 0.357 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78250 (2002 PE9)          Discovered 2002-Aug-05 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-22 07:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin