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181849 (1998 UM17)
Classification: Main-belt Asteroid          SPK-ID: 2181849
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133610915744443 1.264e-07  
a 2.420951155350592 4.1891e-08 au
q 2.097485654511632 2.8536e-07 au
i 7.480379990583077 1.0245e-05 deg
node 38.2723016673233 5.9804e-05 deg
peri 317.0271304211466 6.6429e-05 deg
M 237.5212553778141 3.1934e-05 deg
tp 2457868.596822758931
(2017-Apr-25.09682276)
0.00012892 JED
period 1375.870210892824
3.77
3.5711e-05
9.777e-08
d
yr
n .2616525869590492 6.7912e-09 deg/d
Q 2.744416656189552 4.7488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      6018 days (16.48 yr)  
   first obs. used      1998-10-17  
   last obs. used      2015-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53516  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 22:19:52  

Additional Information
 Earth MOID = 1.099 au 
 Jupiter MOID = 2.69972 au 
 T_jup = 3.490 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3 mag n/a MPO325714  

181849 (1998 UM17)          Discovered 1998-Oct-17 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1998 UM17 = 2002 XT111 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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