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 ]  
27901 (1996 RR4)
Classification: Main-belt Asteroid          SPK-ID: 2027901
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08523035705765793 4.067e-08  
a 3.087619958069771 1.8846e-08 au
q 2.824461006585134 1.2443e-07 au
i 4.281064802900065 4.284e-06 deg
node 159.430029650239 5.5264e-05 deg
peri 252.9115348066336 6.1673e-05 deg
M 81.02139695637746 2.5603e-05 deg
tp 2458554.503539291556
(2019-Mar-12.00353929)
0.00014083 TDB
period 1981.68301074204
5.43
1.8143e-05
4.967e-08
d
yr
n .1816637666309701 1.6632e-09 deg/d
Q 3.350778909554409 2.0452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1131  
   data-arc span      9874 days (27.03 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:12:41  

Additional Information
 Earth MOID = 1.83902 au 
 Jupiter MOID = 1.96377 au 
 T_jup = 3.216 
[ 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 14.4   n/a MPO279806  
diameter diameter 8.850 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27901 (1996 RR4)          Discovered 1996-Sep-13 by JPL/GEODSS NEAT at Haleakala
Reference: 20010902/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 2020-Mar-30 14:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin