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 ]  
91172 (1998 RG5)
Classification: Main-belt Asteroid          SPK-ID: 2091172
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07505433097285075 3.6013e-08  
a 3.169295045629011 2.6251e-08 au
q 2.931425726323755 1.1719e-07 au
i 9.735424852892407 5.2677e-06 deg
node 39.43423703461212 2.4924e-05 deg
peri 241.1575979294998 4.8794e-05 deg
M 86.55689352729745 3.8958e-05 deg
tp 2458901.002354460286
(2020-Feb-21.50235446)
0.00022429 TDB
period 2060.83126513825
5.64
2.5604e-05
7.01e-08
d
yr
n .1746867907576361 2.1704e-09 deg/d
Q 3.407164364934267 2.8221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      663  
   data-arc span      8360 days (22.89 yr)  
   first obs. used      1998-09-15  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55102  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:41  

Additional Information
 Earth MOID = 1.93105 au 
 Jupiter MOID = 1.7008 au 
 T_jup = 3.176 
[ 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 14.67   n/a E2021B10  
rotation period rot_per 21.7 h n/a LCDB (Rev. 2020-October); 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:
[Molnar, L.; Pal, A.; Sarneczky, K.; Szabo, R.; et al. (2018) Ap. J. Supp. Ser. 234, A37.]

91172 (1998 RG5)          Discovered 1998-Sep-15 by ODAS at Caussols
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 RG5 = 2002 JN56 
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 20:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin