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
JPL Small-Body Database Browser
Search: [ help ]  
90817 Doylehall (1995 RO)
Classification: Main-belt Asteroid          SPK-ID: 2090817
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1340533854058479 4.3848e-08  
a 2.703996189975681 1.7845e-08 au
q 2.341516346584927 1.2029e-07 au
i 7.290882486016171 5.618e-06 deg
node 219.9859464486811 4.5382e-05 deg
peri 193.8244073448396 5.279e-05 deg
M 145.2887430263434 2.9682e-05 deg
tp 2458345.053866991401
(2018-Aug-14.55386699)
0.00013019 TDB
period 1624.080455017163
4.45
1.6077e-05
4.402e-08
d
yr
n .2216638953371283 2.1943e-09 deg/d
Q 3.066476033366436 2.0237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      9005 days (24.65 yr)  
   first obs. used      1995-09-01  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:08  

Additional Information
 Earth MOID = 1.35325 au 
 Jupiter MOID = 2.29375 au 
 T_jup = 3.342 
[ 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 15.7   n/a MPO432446  
diameter diameter 4.481 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90817 Doylehall           Discovered 1995 Sept. 1 by AMOS at Haleakala.
Doyle Hall is an astronomer and a key member of the Air Force Maui and Supercomputing (AMOS) team, which supports a number of minor planet programs, including JPL's Near-Earth Asteroid Tracking program.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

[ show close-approach data ]
Alternate Designations
 1995 RO = 2000 VN31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-01 05:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin