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226789 (2004 RZ172)
Classification: Main-belt Asteroid          SPK-ID: 2226789
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02933395114849633 4.3605e-08  
a 2.770918677834033 2.7883e-08 au
q 2.689636684701993 1.2425e-07 au
i 4.479746910685088 4.7691e-06 deg
node 230.3355175100332 7.5145e-05 deg
peri 356.9059316489264 0.00013055 deg
M 262.1695004578997 0.00010854 deg
tp 2459458.331708119065
(2021-Aug-31.83170812)
0.00050862 TDB
period 1684.744693058992
4.61
2.543e-05
6.962e-08
d
yr
n .2136822282231665 3.2253e-09 deg/d
Q 2.852200670966072 2.8701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      287  
   data-arc span      8845 days (24.22 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52986  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 01:38:06  

Additional Information
 Earth MOID = 1.67918 au 
 Jupiter MOID = 2.12399 au 
 T_jup = 3.332 
[ 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 15.9   n/a MPO418210  
diameter diameter 3.696 km 0.824 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226789 (2004 RZ172)          Discovered 2004-Sep-09 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1946-Mar-30 09:20 00:04 Psych 0.0449604054075732 0.0449531113815172 0.0449677179219194 3.15645520669634 3.15645512144066 2431909.888941405 3.96722554133832 1520.01813002437 84.5636454985124 -76.5367691407318 77246.3675300113 T 15 CATAB v2.0f-lin.ifort 2020-Jan-30 01:38:19 2020-Jan-30 01:38
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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