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1480 Aunus (1938 DK)
Classification: Main-belt Asteroid          SPK-ID: 2001480
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1086753964330948 2.59e-08  
a 2.202860784100475 5.0523e-09 au
q 1.963464015101438 5.6016e-08 au
i 4.860658070708141 3.6807e-06 deg
node 63.66965123189188 3.4542e-05 deg
peri 64.91307908609576 3.9355e-05 deg
M 145.3840241022917 1.835e-05 deg
tp 2458718.226733079718
(2019-Aug-22.72673308)
6.0497e-05 TDB
period 1194.20532732774
3.27
4.1084e-06
1.125e-08
d
yr
n .3014556975772064 1.0371e-09 deg/d
Q 2.442257553099513 5.6013e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2638  
   data-arc span      29108 days (79.69 yr)  
   first obs. used      1940-12-28  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42345  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:04:36  

Additional Information
 Earth MOID = .984288 au 
 Jupiter MOID = 2.59891 au 
 T_jup = 3.651 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.20   n/a E2021B10  
diameter diameter 6.385 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.1600 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pravec, P.; Oey, J.; Durkee, R.; et al. (2020). CBET 4789.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.257   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1480 Aunus (1938 DK)          Discovered 1938-Feb-18 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 DK = 1992 WX9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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