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152389 (2005 US228)
Classification: Main-belt Asteroid          SPK-ID: 2152389
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294520643971619 5.0514e-08  
a 2.563915497554329 2.0229e-08 au
q 2.232011343456044 1.2909e-07 au
i 4.494793788042279 5.7241e-06 deg
node 70.37418591107242 7.019e-05 deg
peri 155.9635184699516 7.4421e-05 deg
M 69.00763936317838 2.608e-05 deg
tp 2458913.059037497736
(2020-Mar-04.55903750)
0.00010838 TDB
period 1499.525957643899
4.11
1.7747e-05
4.859e-08
d
yr
n .2400758707542769 2.8413e-09 deg/d
Q 2.895819651652613 2.2848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      6784 days (18.57 yr)  
   first obs. used      2001-11-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:26:55  

Additional Information
 Earth MOID = 1.22191 au 
 Jupiter MOID = 2.08488 au 
 T_jup = 3.417 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457277.5 (2015-Sep-12.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1288358427111374 5.054e-08  
q 2.232712059045247 1.2882e-07 au
tp 2457412.434241851940
(2016-Jan-24.93424185)
0.00010894 TDB
node 70.40681837074665 7.0144e-05 deg
peri 155.4375951889461 7.4408e-05 deg
i 4.496665997060437 5.726e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      6784 days (18.57 yr)  
   first obs. used      2001-11-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:26:55  

Additional Information
 Jupiter MOID = 2.08488 au 
 T_jup = 3.417 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.554280009836028E-15 -6.450878292840924E-15 -7.100859716091914E-14 1.994222476933259E-14 2.045986376755924E-14 2.610715414684232E-15
q -6.450878292840924E-15 1.65941534631744E-14 3.128381378731452E-14 -5.129177587681191E-14 -9.193445450616044E-14 -6.524268912714215E-15
tp -7.100859716091914E-14 3.128381378731452E-14 1.186846067339569E-8 -6.311173322477775E-11 2.737695422407345E-9 5.921134070832108E-12
node 1.994222476933259E-14 -5.129177587681191E-14 -6.311173322477775E-11 4.920206377790466E-9 -4.918141601535999E-9 3.442689689452081E-11
peri 2.045986376755924E-14 -9.193445450616044E-14 2.737695422407345E-9 -4.918141601535999E-9 5.536534136988507E-9 -3.292367530045952E-11
i 2.610715414684232E-15 -6.524268912714215E-15 5.921134070832108E-12 3.442689689452081E-11 -3.292367530045952E-11 3.278690783172492E-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 16.59   n/a E2020-QM9  

152389 (2005 US228)          Discovered 2005-Oct-25 by Spacewatch at Kitt Peak
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

Alternate Designations
 2005 US228 = 2001 WQ78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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