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

Significant website upgrade scheduled for September 27. More details available here.

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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1338524095989124 4.4018e-08  
a 2.704674936927698 1.7635e-08 au
q 2.342647679438139 1.2099e-07 au
i 7.289766895547629 5.6036e-06 deg
node 219.9768914214889 4.3354e-05 deg
peri 193.6675325415792 5.0874e-05 deg
M 233.2600579844081 3.0042e-05 deg
tp 2459968.481582713479
(2023-Jan-23.98158271)
0.00013922 TDB
period 1624.691999239833
4.45
1.589e-05
4.35e-08
d
yr
n .2215804596615471 2.1671e-09 deg/d
Q 3.066702194417257 1.9995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      9034 days (24.73 yr)  
   first obs. used      1995-09-01  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56715  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:42:03  

Additional Information
 Earth MOID = 1.35386 au 
 Jupiter MOID = 2.29558 au 
 T_jup = 3.341 
[ 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 15.71   n/a E2021B10  
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 2021-Sep-19 21:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin