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2912 Lapalma (1942 DM)
Classification: Main-belt Asteroid          SPK-ID: 2002912
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07131199931887688 4.1665e-08  
a 2.289836608746723 7.7272e-09 au
q 2.126543782063437 9.6003e-08 au
i 7.277209973500471 3.8631e-06 deg
node 108.1398274189248 3.4053e-05 deg
peri 76.37992723920908 4.2635e-05 deg
M 68.41980560310773 2.6095e-05 deg
tp 2458359.961552508245
(2018-Aug-29.46155251)		 9.1638e-05 TDB
period 1265.625359992233
3.47		 6.4064e-06
1.754e-08		 d
yr
n .284444363537571 1.4398e-09 deg/d
Q 2.453129435430009 8.2782e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2143  
   data-arc span      28379 days (77.70 yr)  
   first obs. used      1942-02-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48215  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:21:01  

Additional Information
 Earth MOID = 1.14321 au 
 Jupiter MOID = 2.52928 au 
 T_jup = 3.585 
[ 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 12.6   n/a MPO384777  
diameter diameter 6.519 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.71076 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Brinsfield, J. (2008) Minor Planet Bull. 35, 119-122.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.456   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B V   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)

2912 Lapalma (1942 DM)          Discovered 1942-Feb-18 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 DM = 1956 EN = 1973 AJ2 = 1973 CB = 1979 YJ = 1980 BG = 1980 DY5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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