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JPL Small-Body Database Browser
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80177 (1999 US43)
Classification: Main-belt Asteroid          SPK-ID: 2080177
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2419830822021735 5.1727e-08  
a 2.322470910710885 1.0507e-08 au
q 1.760472241412177 1.1676e-07 au
i 9.377852632367773 7.1648e-06 deg
node 307.0792353165328 2.9632e-05 deg
peri 104.273638106456 4.1965e-05 deg
M 173.8732640607393 2.1678e-05 deg
tp 2457976.112560763317
(2017-Aug-10.61256076)
7.6837e-05 TDB
period 1292.777698396939
3.54
8.7725e-06
2.402e-08
d
yr
n .2784701503177264 1.8896e-09 deg/d
Q 2.884469580009594 1.3049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      7709 days (21.11 yr)  
   first obs. used      1997-03-03  
   last obs. used      2018-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54285  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:17:35  

Additional Information
 Earth MOID = .79897 au 
 Jupiter MOID = 2.55719 au 
 T_jup = 3.520 
[ 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 16.3   n/a MPO436341  

80177 (1999 US43)          Discovered 1999-Oct-28 by CSS at Catalina
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1999 US43 = 1997 ER9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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