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1551 Argelander (1938 DC1)
Classification: Main-belt Asteroid          SPK-ID: 2001551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06688939507441838 1.234e-08  
a 2.395041945646987 5.746e-09 au
q 2.234839038724802 3.0056e-08 au
i 3.761455338224636 1.5035e-07 deg
node 107.2338954790461 2.0171e-06 deg
peri 233.1614280137941 1.5084e-05 deg
M 307.4800777270469 1.6595e-05 deg
tp 2459398.010271759372
(2021-Jul-02.51027176)
6.2659e-05 TDB
period 1353.84240410407
3.71
4.8721e-06
1.334e-08
d
yr
n .2659098273984383 9.5693e-10 deg/d
Q 2.555244852569172 6.1304e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3318  
   data-arc span      33105 days (90.64 yr)  
   first obs. used      1930-01-17  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40802  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:36:31  

Additional Information
 Earth MOID = 1.2261 au 
 Jupiter MOID = 2.67149 au 
 T_jup = 3.523 
[ 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 12.23   n/a E2021B10  
diameter diameter 10.238 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.063 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Fauerbach, M.; Brown, A. (2018) Minor Planet Bull. 45, 240-241.]
[Fauerbach, M. (2019) Minor Planet Bull. 46, 418-421.]
geometric albedo albedo 0.222   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1551 Argelander (1938 DC1)          Discovered 1938-Feb-24 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 DC1 = 1930 BL = 1940 XD = 1951 XG1 = 1953 GD1 = 1957 KR = 1962 XP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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