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 ]  
78169 (2002 NB31)
Classification: Main-belt Asteroid          SPK-ID: 2078169
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 .2011338917152521 4.606e-08  
a 2.597504419538445 1.3865e-08 au
q 2.075058246889111 1.1973e-07 au
i 6.274220426610579 3.7551e-06 deg
node 108.5491879802486 6.0946e-05 deg
peri 207.894679843091 6.3037e-05 deg
M 83.52717871069258 1.5098e-05 deg
tp 2458645.720774434713
(2019-Jun-11.22077443)
6.4446e-05 TDB
period 1529.089371567072
4.19
1.2243e-05
3.352e-08
d
yr
n .2354342438670262 1.885e-09 deg/d
Q 3.119950592187779 1.6653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      8111 days (22.21 yr)  
   first obs. used      1998-07-31  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51405  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:56  

Additional Information
 Earth MOID = 1.06373 au 
 Jupiter MOID = 2.17953 au 
 T_jup = 3.379 
[ show covariance matrix ]

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 15.5   n/a MPO400730  
diameter diameter 2.477 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.080   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78169 (2002 NB31)          Discovered 2002-Jul-15 by Broughton, J. at Reedy Creek
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 2020-Dec-04 23:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin