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 ]  
186915 (2004 NP8)
Classification: Main-belt Asteroid          SPK-ID: 2186915
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0918059254415301 4.5886e-08  
a 2.810246647374625 2.2689e-08 au
q 2.55224935319344 1.2863e-07 au
i 4.803704887343735 4.4711e-06 deg
node 97.2755649619226 6.1336e-05 deg
peri 227.3695728831318 6.7208e-05 deg
M 197.2613574015648 2.9032e-05 deg
tp 2460174.363284165484
(2023-Aug-17.86328417)
0.00014154 TDB
period 1720.73932674099
4.71
2.0839e-05
5.705e-08
d
yr
n .2092123974883664 2.5337e-09 deg/d
Q 3.068243941555809 2.4772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7437 days (20.36 yr)  
   first obs. used      2000-10-01  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:14  

Additional Information
 Earth MOID = 1.5422 au 
 Jupiter MOID = 2.19221 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457683.5 (2016-Oct-22.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09311959054372967 4.6067e-08  
q 2.548565538066832 1.2941e-07 au
tp 2458447.946129901180
(2018-Nov-25.44612990)
0.00013438 TDB
node 97.39489740654383 6.1408e-05 deg
peri 226.1840996765758 6.7102e-05 deg
i 4.801598119329018 4.4684e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7437 days (20.36 yr)  
   first obs. used      2000-10-01  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:14  

Additional Information
 Jupiter MOID = 2.19221 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.122140003853723E-15 -5.886293109916838E-15 1.558686028538743E-12 -1.358804276413937E-14 2.677195383896155E-13 2.164037361051493E-16
q -5.886293109916838E-15 1.674632098263763E-14 -3.809758969440523E-12 3.724295774588896E-14 -6.753637375908525E-13 -3.211069009692014E-16
tp 1.558686028538743E-12 -3.809758969440523E-12 1.805687281934644E-8 -6.049842341360106E-11 3.662434022862905E-9 -3.486762080933913E-12
node -1.358804276413937E-14 3.724295774588896E-14 -6.049842341360106E-11 3.770915233191813E-9 -3.769259521497573E-9 2.234769755563437E-12
peri 2.677195383896155E-13 -6.753637375908525E-13 3.662434022862905E-9 -3.769259521497573E-9 4.502716746517209E-9 -2.984632283813242E-12
i 2.164037361051493E-16 -3.211069009692014E-16 -3.486762080933913E-12 2.234769755563437E-12 -2.984632283813242E-12 1.996643645569302E-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 16.45   n/a MPCxxxxx  

186915 (2004 NP8)          Discovered 2004-Jul-10 by Dellinger, J., Eastman, M. at Needville
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2113-Jan-28 05:06 00:20 Amphi 0.0247292466146214 0.024722631662868 0.0247359848250126 3.23417901429645 3.2341789424181 2492844.712584681 20.0144880688992 2823.33675015726 64.1899731126871 83.3570826503585 57200.034564219 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 21:53:14 2021-Apr-13 21:53
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-26 08:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin