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 ]  
66517 (1999 RM98)
Classification: Main-belt Asteroid          SPK-ID: 2066517
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497815969548932 3.5891e-08  
a 2.631156123609162 1.272e-08 au
q 2.237057357577335 9.3934e-08 au
i 3.454595226842903 5.2287e-06 deg
node 173.6373571068951 6.6974e-05 deg
peri 263.9179970592813 6.9461e-05 deg
M 245.835746189441 1.9421e-05 deg
tp 2459494.863042132499
(2021-Oct-07.36304213)
8.5611e-05 TDB
period 1558.900349517628
4.27
1.1305e-05
3.095e-08
d
yr
n .2309320157067096 1.6747e-09 deg/d
Q 3.025254889640989 1.4626e-08 au
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      8156 days (22.33 yr)  
   first obs. used      1997-03-05  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5238  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:51:00  

Additional Information
 Earth MOID = 1.2556 au 
 Jupiter MOID = 2.22718 au 
 T_jup = 3.381 
[ 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 15.1   n/a MPO385239  
diameter diameter 2.742 km 0.910 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.162   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66517 (1999 RM98)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ 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
1986-Nov-23 02:45 < 00:01 Amphi 0.0491215289602003 0.0491200643760292 0.0491229937226772 3.60133690142105 3.60133686892449 2446757.614533267 0.553735142885769 185.030104052884 36.3100103782001 69.570539815519 190036.613024438 T 20 CATAB v2.0f-lin.ifort 2019-Nov-07 07:51:18 2019-Nov-07 07:51
2173-Dec-04 16:24 00:02 Hygie 0.0463545651200552 0.0463474719164638 0.0463616682246115 4.43711661020812 4.43711642235903 2515070.183179180 2.18895686421558 1136.87440980344 56.0723161337392 -72.0913957332983 117521.289442452 T 20 CATAB v2.0f-lin.ifort 2019-Nov-07 07:51:18 2019-Nov-07 07:51

Alternate Designations
 1999 RM98 = 1997 EY28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-28 21:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin