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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284076939526141 4.0311e-08  
a 2.609080899139952 1.2502e-08 au
q 2.013146747631582 1.0799e-07 au
i 3.931872432967036 5.3332e-06 deg
node 236.9652673804234 5.6283e-05 deg
peri 200.8951504061394 5.8095e-05 deg
M 61.82590613825125 1.2469e-05 deg
tp 2458936.138787938225
(2020-Mar-27.63878794)
5.2366e-05 TDB
period 1539.322951926101
4.21
1.1064e-05
3.029e-08
d
yr
n .2338690523320948 1.681e-09 deg/d
Q 3.205015050648321 1.5358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      22115 days (60.55 yr)  
   first obs. used      1960-09-29  
   last obs. used      2021-04-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56145  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:04:29  

Additional Information
 Earth MOID = 1.02869 au 
 Jupiter MOID = 2.07002 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457705.5 (2016-Nov-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2260255089364854 4.0057e-08  
q 2.021136340471701 1.0691e-07 au
tp 2457395.708767664190
(2016-Jan-08.20876766)
4.9545e-05 TDB
node 237.0186308094133 5.6426e-05 deg
peri 200.8652336901366 5.8293e-05 deg
i 3.923233900332085 5.3288e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      22115 days (60.55 yr)  
   first obs. used      1960-09-29  
   last obs. used      2021-04-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56145  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:04:29  

Additional Information
 Jupiter MOID = 2.07002 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.604528660621627E-15 -4.265980027707891E-15 -8.780764021786048E-13 1.49091263565507E-14 -2.546712430965288E-13 -2.682259287599934E-15
q -4.265980027707891E-15 1.142945748099952E-14 2.41649422556249E-12 -3.861116678335162E-14 7.051781634749628E-13 7.004684705952623E-15
tp -8.780764021786048E-13 2.41649422556249E-12 2.454742021386096E-9 1.048230851232402E-12 7.372767864264607E-10 1.37500652817222E-12
node 1.49091263565507E-14 -3.861116678335162E-14 1.048230851232402E-12 3.183847467953089E-9 -3.175024097629775E-9 -9.910156208047927E-11
peri -2.546712430965288E-13 7.051781634749628E-13 7.372767864264607E-10 -3.175024097629775E-9 3.398033395416357E-9 9.919366267315656E-11
i -2.682259287599934E-15 7.004684705952623E-15 1.37500652817222E-12 -9.910156208047927E-11 9.919366267315656E-11 2.83958309789648E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.55   n/a MPCxxxxx  

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

Alternate Designations
 1998 UR40 = 2002 SG55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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