Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1725 CrAO (1930 SK)
Classification: Main-belt Asteroid          SPK-ID: 2001725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08815809540648364 3.6251e-08  
a 2.903826602748051 1.0868e-08 au
q 2.647830780059103 1.0467e-07 au
i 3.17089697322854 3.3238e-06 deg
node 119.083254995411 7.0543e-05 deg
peri 229.4213771537157 7.2942e-05 deg
M 57.56069256191307 1.8229e-05 deg
tp 2458711.513233152036
(2019-Aug-16.01323315)
9.1604e-05 TDB
period 1807.40070063204
4.95
1.0146e-05
2.778e-08
d
yr
n .1991810669732006 1.1182e-09 deg/d
Q 3.159822425436999 1.1826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2903  
   data-arc span      38404 days (105.14 yr)  
   first obs. used      1915-09-09  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43466  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:16:06  

Additional Information
 Earth MOID = 1.64239 au 
 Jupiter MOID = 2.2032 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456686.5 (2014-Jan-29.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09121305786654911 3.6565e-08  
q 2.638776947416553 1.0603e-07 au
tp 2456896.593707140030
(2014-Aug-27.09370714)
8.8374e-05 TDB
node 119.2422905647949 7.0577e-05 deg
peri 227.9177051081429 7.2765e-05 deg
i 3.170797456640871 3.3256e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2903  
   data-arc span      38404 days (105.14 yr)  
   first obs. used      1915-09-09  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43466  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:16:06  

Additional Information
 Jupiter MOID = 2.2032 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.337019941910431E-15 -3.860420322676359E-15 3.972438228039173E-13 9.553693060730741E-15 8.802991210710793E-14 -3.25120818931023E-16
q -3.860420322676359E-15 1.124260080066614E-14 -1.28184061049386E-12 -2.809743227945548E-14 -2.846952828797935E-13 1.002419565891042E-15
tp 3.972438228039173E-13 -1.28184061049386E-12 7.809930342630924E-9 1.368030379064924E-11 1.587506254335409E-9 9.335094777369137E-13
node 9.553693060730741E-15 -2.809743227945548E-14 1.368030379064924E-11 4.98116134190434E-9 -4.970356689244728E-9 4.55565010082584E-11
peri 8.802991210710793E-14 -2.846952828797935E-13 1.587506254335409E-9 -4.970356689244728E-9 5.294709921408054E-9 -4.5314220694134E-11
i -3.25120818931023E-16 1.002419565891042E-15 9.335094777369137E-13 4.55565010082584E-11 -4.5314220694134E-11 1.105960558588931E-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 11.3   n/a MPO502170  
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. 2019-August); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-27 15:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin