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1725 CrAO (1930 SK)
Classification: Main-belt Asteroid          SPK-ID: 2001725
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08825052037257905 3.4127e-08  
a 2.904532597023886 1.0663e-08 au
q 2.64820608389741 9.7763e-08 au
i 3.170915745826581 3.2726e-06 deg
node 119.0824862521281 6.6718e-05 deg
peri 229.5643148908515 6.916e-05 deg
M 97.23986706225385 1.8002e-05 deg
tp 2458712.123604934803
(2019-Aug-16.62360493)
9.046e-05 TDB
period 1808.05987847466
4.95
9.9566e-06
2.726e-08
d
yr
n .1991084500496234 1.0965e-09 deg/d
Q 3.160859110150362 1.1604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3047  
   data-arc span      38484 days (105.36 yr)  
   first obs. used      1915-09-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42901  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:41  

Additional Information
 Earth MOID = 1.64102 au 
 Jupiter MOID = 2.20253 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456789.5 (2014-May-12.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09116803342462206 3.4471e-08  
q 2.638856173586837 9.914e-08 au
tp 2456896.506235942903
(2014-Aug-27.00623594)
8.7013e-05 TDB
node 119.2422717475679 6.6754e-05 deg
peri 227.8952062965666 6.8985e-05 deg
i 3.170817235279448 3.274e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3047  
   data-arc span      38484 days (105.36 yr)  
   first obs. used      1915-09-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42901  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:41  

Additional Information
 Jupiter MOID = 2.20253 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.188244867564589E-15 -3.401761227957597E-15 2.067578233623203E-13 8.541940197128313E-15 4.096482375335609E-14 -2.855917796587252E-16
q -3.401761227957597E-15 9.828757722123533E-15 -6.942353929776008E-13 -2.494648593453286E-14 -1.396241351590626E-13 8.820194623715039E-16
tp 2.067578233623203E-13 -6.942353929776008E-13 7.571267701388677E-9 6.934707228994053E-12 1.533776873340208E-9 8.367695896428682E-13
node 8.541940197128313E-15 -2.494648593453286E-14 6.934707228994053E-12 4.456156779462778E-9 -4.447600904690318E-9 3.231221613194057E-11
peri 4.096482375335609E-14 -1.396241351590626E-13 1.533776873340208E-9 -4.447600904690318E-9 4.758892993221117E-9 -3.210770491487621E-11
i -2.855917796587252E-16 8.820194623715039E-16 8.367695896428682E-13 3.231221613194057E-11 -3.210770491487621E-11 1.071879779843688E-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 11.36   n/a E2021B10  
diameter diameter 16.089 km 1.649 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 21.45 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Slivan, S.M.; Binzel, R.P.; Boroumand, S.C.; Pan M.W.; et al. (2008) Icarus 195, 226-276.]
geometric albedo albedo 0.220   0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1725 CrAO (1930 SK)          Discovered 1930-Sep-20 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1930 SK = 1933 DF = 1950 TV3 = 1960 WL = 1965 UJ = A906 YP = A915 RK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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