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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1672214922445693 1.8363e-08  
a 3.142509715673413 1.3653e-08 au
q 2.617014551625447 5.8568e-08 au
i 1.425239695609277 1.4394e-07 deg
node 66.04369201161076 1.1491e-05 deg
peri 207.2057001429511 1.0744e-05 deg
M 110.6843555620435 6.2008e-06 deg
tp 2458574.899466350450
(2019-Apr-01.39946635)
3.3082e-05 TDB
period 2034.760838333601
5.57
1.326e-05
3.63e-08
d
yr
n .1769249698627125 1.153e-09 deg/d
Q 3.668004879721378 1.5936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3105  
   data-arc span      15306 days (41.91 yr)  
   first obs. used      1979-04-24  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45072  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:26:24  

Additional Information
 Earth MOID = 1.59899 au 
 Jupiter MOID = 1.44797 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 12.41   n/a E2021B10  
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 ]
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