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 ]  
85528 (1997 WP12)
Classification: Main-belt Asteroid          SPK-ID: 2085528
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1811799245680659 5.472e-08  
a 3.032059371003862 1.8312e-08 au
q 2.482711082879485 1.6678e-07 au
i .8557365107818066 6.5186e-06 deg
node 350.3030445199151 0.00032282 deg
peri 53.31978304538531 0.00032346 deg
M 92.2113049005593 1.7381e-05 deg
tp 2458506.545842142753
(2019-Jan-23.04584214)
9.2199e-05 TDB
period 1928.434881388718
5.28
1.747e-05
4.783e-08
d
yr
n .1866798840211572 1.6912e-09 deg/d
Q 3.581407659128239 2.163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      445  
   data-arc span      8131 days (22.26 yr)  
   first obs. used      1997-11-01  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:33:46  

Additional Information
 Earth MOID = 1.49179 au 
 Jupiter MOID = 1.82731 au 
 T_jup = 3.217 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456964.5 (2014-Nov-03.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17855720560986 5.4022e-08  
q 2.494989028186457 1.6396e-07 au
tp 2456580.121886934978
(2013-Oct-14.62188694)
9.3639e-05 TDB
node 350.3858567738249 0.00032199 deg
peri 53.94086869577171 0.00032266 deg
i .8577275678787083 6.5109e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      445  
   data-arc span      8131 days (22.26 yr)  
   first obs. used      1997-11-01  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:33:46  

Additional Information
 Jupiter MOID = 1.82731 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.918410690948241E-15 -8.819284095632243E-15 -2.296872799958492E-12 2.686376008129685E-14 -5.962664044519237E-13 -3.810015293208328E-16
q -8.819284095632243E-15 2.688164947043041E-14 6.818112760367659E-12 -9.126106486772731E-14 1.796544584625818E-12 1.496844556323071E-15
tp -2.296872799958492E-12 6.818112760367659E-12 8.768235460263914E-9 -2.812012688531195E-11 1.942131526854878E-9 -4.042137520364679E-13
node 2.686376008129685E-14 -9.126106486772731E-14 -2.812012688531195E-11 1.036781119560059E-7 -1.036747731490601E-7 6.392755352265271E-11
peri -5.962664044519237E-13 1.796544584625818E-12 1.942131526854878E-9 -1.036747731490601E-7 1.041071451981852E-7 -6.394862086338371E-11
i -3.810015293208328E-16 1.496844556323071E-15 -4.042137520364679E-13 6.392755352265271E-11 -6.394862086338371E-11 4.239239891122502E-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 15.8   n/a MPO459396  
diameter diameter 5.091 km 2.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85528 (1997 WP12)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 WP12 = 2002 RQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-29 08:51 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin