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 ]  
4153 Roburnham (1985 JT1)
Classification: Main-belt Asteroid          SPK-ID: 2004153
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1673739330639185 2.9093e-08  
a 3.142114163581027 1.5173e-08 au
q 2.616206157886626 8.9402e-08 au
i 1.425297537547479 3.2599e-06 deg
node 66.0419402400141 0.00013957 deg
peri 207.1662532497313 0.00013998 deg
M 75.3229820173117 1.0441e-05 deg
tp 2458574.846340091726
(2019-Apr-01.34634009)
5.8978e-05 TDB
period 2034.376673134904
5.57
1.4736e-05
4.034e-08
d
yr
n .1769583798094049 1.2818e-09 deg/d
Q 3.668022169275428 1.7713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2814  
   data-arc span      15159 days (41.50 yr)  
   first obs. used      1979-04-24  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45532  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:54:00  

Additional Information
 Earth MOID = 1.60001 au 
 Jupiter MOID = 1.44872 au 
 T_jup = 3.188 
[ 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 12.4   n/a MPO502193  
diameter diameter 17.337 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4153 Roburnham (1985 JT1)          Discovered 1985-May-14 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 JT1 = 1979 HK2 = 1981 UF17 = 1981 UJ21 = 1984 DM2 = 1985 KE1 = 1986 RJ3 = 1986 WE8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-01 00:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin