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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
91412 (1999 NP42)
Classification: Main-belt Asteroid          SPK-ID: 2091412
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .175742083427314 3.7563e-08  
a 2.626969894818171 1.8576e-08 au
q 2.165300732401994 9.6885e-08 au
i 11.18540730361957 5.6706e-06 deg
node 323.371499960262 2.1368e-05 deg
peri 69.78946661714282 2.7433e-05 deg
M 349.5513017162939 1.7832e-05 deg
tp 2459441.637838513507
(2021-Aug-15.13783851)
7.7248e-05 TDB
period 1555.181461235449
4.26
1.6496e-05
4.516e-08
d
yr
n .2314842408898142 2.4553e-09 deg/d
Q 3.088639057234349 2.1841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      8918 days (24.42 yr)  
   first obs. used      1997-02-08  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56476  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 22:04:43  

Additional Information
 Earth MOID = 1.19881 au 
 Jupiter MOID = 2.49781 au 
 T_jup = 3.353 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.90   n/a E2021B10  
diameter diameter 6.358 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91412 (1999 NP42)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 NP42 = 2001 AR35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-25 15:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin