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1937 Locarno (1973 YA)
Classification: Main-belt Asteroid          SPK-ID: 2001937
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1563117383336468 3.6312e-08  
a 2.37801041583277 6.7586e-09 au
q 2.006299473958431 8.6711e-08 au
i 12.45565098559867 3.6844e-06 deg
node 78.95838361911095 2.0949e-05 deg
peri 226.1670589329763 2.5139e-05 deg
M 5.288999382553115 1.4791e-05 deg
tp 2458980.821586993819
(2020-May-11.32158699)
5.5029e-05 TDB
period 1339.427020088884
3.67
5.7102e-06
1.563e-08
d
yr
n .2687716423520488 1.1458e-09 deg/d
Q 2.749721357707108 7.815e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2528  
   data-arc span      30689 days (84.02 yr)  
   first obs. used      1936-11-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39928  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:03:34  

Additional Information
 Earth MOID = 1.01097 au 
 Jupiter MOID = 2.48052 au 
 T_jup = 3.492 
[ 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 11.7   n/a MPO337262  
diameter diameter 12.705 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 110. 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:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.229   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1937 Locarno (1973 YA)          Discovered 1973-Dec-19 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1973 YA = 1936 VB = 1951 YU = 1962 XH1 = 1968 HJ1 = 1969 VT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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