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JPL Small-Body Database Browser
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172457 (2003 RU1)
Classification: Main-belt Asteroid          SPK-ID: 2172457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356358218621366 6.2752e-08  
a 2.303484724031169 7.3175e-09 au
q 1.760701207937208 1.4397e-07 au
i 2.203414965890716 5.1055e-06 deg
node 70.872589000506 0.00018872 deg
peri 260.2419967084698 0.00018937 deg
M 298.1057762640598 1.4036e-05 deg
tp 2459220.045253043700
(2021-Jan-05.54525304)
5.0016e-05 TDB
period 1276.957465900619
3.50
6.0848e-06
1.666e-08
d
yr
n .2819201184168633 1.3434e-09 deg/d
Q 2.84626824012513 9.0418e-09 au
  Orbit Determination Parameters
   # obs. used (total)      412  
   data-arc span      7210 days (19.74 yr)  
   first obs. used      1999-05-15  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54424  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:13:29  

Additional Information
 Earth MOID = .751679 au 
 Jupiter MOID = 2.52003 au 
 T_jup = 3.551 
[ 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 17.0   n/a MPO266536  
diameter diameter 1.115 km 0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.187   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172457 (2003 RU1)          Discovered 2003-Sep-02 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2003 RU1 = 2002 EQ132 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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