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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08825053401462478 1.7923e-08  
a 2.904532592033993 1.05e-08 au
q 2.648206039724111 4.9626e-08 au
i 3.17091715761542 4.8084e-07 deg
node 119.0824038285334 8.9321e-06 deg
peri 229.5643821376324 1.2477e-05 deg
M 97.23988347513736 8.1123e-06 deg
tp 2458712.123523761448
(2019-Aug-16.62352376)
4.0213e-05 TDB
period 1808.059873815377
4.95
9.8041e-06
2.684e-08
d
yr
n .1991084505627162 1.0797e-09 deg/d
Q 3.160859144343875 1.1426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3137  
   data-arc span      38548 days (105.54 yr)  
   first obs. used      1915-09-09  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:42:35  

Additional Information
 Earth MOID = 1.64102 au 
 Jupiter MOID = 2.20253 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456848.5 (2014-Jul-10.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09113153455237116 1.8425e-08  
q 2.638863205444313 5.134e-08 au
tp 2456896.498722296822
(2014-Aug-26.99872230)
3.6367e-05 TDB
node 119.2421803226549 8.9478e-06 deg
peri 227.8931621137457 1.201e-05 deg
i 3.170817591580485 4.8157e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3137  
   data-arc span      38548 days (105.54 yr)  
   first obs. used      1915-09-09  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:42:35  

Additional Information
 Jupiter MOID = 2.20253 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.394778386321985E-16 -9.31304199055669E-16 -4.400429465539445E-13 1.113880428528362E-14 -1.267994539069943E-13 7.488574624380334E-16
q -9.31304199055669E-16 2.635801439210589E-15 1.264908319163516E-12 -3.250304234465633E-14 3.643718749113542E-13 -2.171447999710928E-15
tp -4.400429465539445E-13 1.264908319163516E-12 1.322541178048579E-9 2.670870729854976E-11 2.864009111640564E-10 2.913379066572492E-12
node 1.113880428528362E-14 -3.250304234465633E-14 2.670870729854976E-11 8.006276087608481E-11 -7.453143243531044E-11 3.291184009823216E-12
peri -1.267994539069943E-13 3.643718749113542E-13 2.864009111640564E-10 -7.453143243531044E-11 1.4424648408968E-10 -2.727999508235526E-12
i 7.488574624380334E-16 -2.171447999710928E-15 2.913379066572492E-12 3.291184009823216E-12 -2.727999508235526E-12 2.319118496506623E-13

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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