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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
154998 (2005 NN1)
Classification: Main-belt Asteroid          SPK-ID: 2154998
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2345029390420043 3.5609e-08  
a 2.346574629459344 9.5253e-09 au
q 1.796295982169725 8.5766e-08 au
i 3.184600159492835 3.8204e-06 deg
node 122.6839961218635 9.2808e-05 deg
peri 212.92256304 9.3416e-05 deg
M 40.30278512507135 1.2023e-05 deg
tp 2458853.511776333684
(2020-Jan-05.01177633)
4.3485e-05 TDB
period 1312.955428654888
3.59
7.9944e-06
2.189e-08
d
yr
n .2741905720050352 1.6695e-09 deg/d
Q 2.896853276748962 1.1759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      10121 days (27.71 yr)  
   first obs. used      1991-12-04  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56688  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:53  

Additional Information
 Earth MOID = .787519 au 
 Jupiter MOID = 2.48594 au 
 T_jup = 3.521 
[ 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 16.7   n/a MPO436784  
rotation period rot_per 2.62 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

154998 (2005 NN1)          Discovered 2005-Jul-01 by CSS at Catalina
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2005 NN1 = 1998 TN37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-17 03:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin