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175765 (1998 UR40)
Classification: Main-belt Asteroid          SPK-ID: 2175765
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284076834651236 4.6687e-08  
a 2.60908090123898 1.3366e-08 au
q 2.013146776613887 1.261e-07 au
i 3.931875397750791 5.6873e-06 deg
node 236.9652826159375 5.7212e-05 deg
peri 200.8951330401851 5.9206e-05 deg
M 61.8259066917129 1.2606e-05 deg
tp 2458936.138785252659
(2020-Mar-27.63878525)
5.3074e-05 TDB
period 1539.322953783698
4.21
1.1829e-05
3.239e-08
d
yr
n .2338690520498704 1.7971e-09 deg/d
Q 3.205015025864072 1.6419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      532  
   data-arc span      22082 days (60.46 yr)  
   first obs. used      1960-09-29  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56391  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:43  

Additional Information
 Earth MOID = 1.02869 au 
 Jupiter MOID = 2.07002 au 
 T_jup = 3.370 
[ 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 MPO449904  

175765 (1998 UR40)          Discovered 1998-Oct-28 by LINEAR at Socorro
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

[ show close-approach data ]
Alternate Designations
 1998 UR40 = 2002 SG55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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