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 ]  
59943 (1999 RH198)
Classification: Main-belt Asteroid          SPK-ID: 2059943
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .165898893726306 6.2574e-08  
a 3.091477952884303 3.4474e-08 au
q 2.578605180521532 2.0571e-07 au
i 16.11106218674512 8.075e-06 deg
node 301.1690589190609 1.9194e-05 deg
peri 332.5503817569366 2.8032e-05 deg
M 337.7439044188155 2.0344e-05 deg
tp 2459123.242265325436
(2020-Sep-30.74226533)
0.0001125 TDB
period 1985.398353272403
5.44
3.3209e-05
9.092e-08
d
yr
n .1813238131313222 3.033e-09 deg/d
Q 3.604350725247074 4.0193e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      7588 days (20.77 yr)  
   first obs. used      1999-07-12  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56173  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:51:05  

Additional Information
 Earth MOID = 1.57275 au 
 Jupiter MOID = 1.64329 au 
 T_jup = 3.144 
[ 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 14.2   n/a MPO302387  
diameter diameter 4.035 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59943 (1999 RH198)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RH198 = 2000 YQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-02 21:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin