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 ]  
74592 (1999 PR4)
Classification: Main-belt Asteroid          SPK-ID: 2074592
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1523261156416375 3.4761e-08  
a 2.234052842869991 6.7231e-09 au
q 1.893748251177448 8.0036e-08 au
i 3.402845159927177 4.1646e-06 deg
node 191.6502596135909 6.0698e-05 deg
peri 226.270465600173 6.2478e-05 deg
M 263.3796885524351 1.4222e-05 deg
tp 2458927.844102741837
(2020-Mar-19.34410274)
4.8536e-05 TDB
period 1219.659461054565
3.34
5.5056e-06
1.507e-08
d
yr
n .2951643565235249 1.3324e-09 deg/d
Q 2.574357434562535 7.7472e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      7411 days (20.29 yr)  
   first obs. used      1999-08-15  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5285  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:26:55  

Additional Information
 Earth MOID = .907172 au 
 Jupiter MOID = 2.74813 au 
 T_jup = 3.622 
[ 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 15.6   n/a MPO439562  
rotation period rot_per 2.5 h n/a LCDB (Rev. 2019-January); 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:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. 237, A19.]

74592 (1999 PR4)          Discovered 1999-Aug-15 by Hug, G. at Farpoint
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 2019-Dec-15 21:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin