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 ]  
74660 (1999 RG90)
Classification: Main-belt Asteroid          SPK-ID: 2074660
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2719133429299835 3.4623e-08  
a 2.534222318941264 1.0444e-08 au
q 1.84513345647017 8.9887e-08 au
i 4.855642775357349 4.031e-06 deg
node 120.1071465889199 4.5497e-05 deg
peri 301.7000464672393 4.7189e-05 deg
M 267.8096640117801 1.4726e-05 deg
tp 2458977.853507424776
(2020-May-08.35350742)
6.1356e-05 TDB
period 1473.55209433533
4.03
9.109e-06
2.494e-08
d
yr
n .244307616530099 1.5102e-09 deg/d
Q 3.223311181412358 1.3284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      886  
   data-arc span      16069 days (43.99 yr)  
   first obs. used      1975-11-02  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49896  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:55:42  

Additional Information
 Earth MOID = .863444 au 
 Jupiter MOID = 2.13124 au 
 T_jup = 3.392 
[ 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 MPO412636  
diameter diameter 6.169 km 0.494 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74660 (1999 RG90)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RG90 = 1975 VG5 = 1987 UB8 = 1991 SN2 = 1993 FP16 
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-06 00:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin