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3271 Ul (1982 RB)
Classification: Amor [NEO]          SPK-ID: 2003271
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3958679905578755 1.1545e-07  
a 2.101721574837919 3.3365e-08 au
q 1.269717278294699 2.3266e-07 au
i 25.07050320069282 1.3037e-05 deg
node 158.8162171124268 1.3938e-05 deg
peri 159.0775475968039 8.1532e-05 deg
M 146.9061921165789 0.00013526 deg
tp 2458546.350540673569
(2019-Mar-03.85054067)
0.00040764 TDB
period 1112.91296167947
3.05
2.6502e-05
7.256e-08
d
yr
n .3234754310496417 7.7029e-09 deg/d
Q 2.93372587138114 4.6574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      14005 days (38.34 yr)  
   first obs. used      1982-09-14  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .601  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-18 06:07:42  

Additional Information
 Earth MOID = .276557 au 
 Jupiter MOID = 2.49547 au 
 T_jup = 3.533 
[ 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 16.4   n/a MPO435729  

3271 Ul (1982 RB)          Discovered 1982-Sep-14 by Schuster, H.-E. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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