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2397 Lappajarvi (1938 DV)
Classification: Main-belt Asteroid          SPK-ID: 2002397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .178468250206981 3.0898e-08  
a 3.083262270138786 1.3544e-08 au
q 2.532997847857913 9.337e-08 au
i 10.30901216752074 3.4146e-06 deg
node 145.7766034748311 2.1696e-05 deg
peri 296.9273453406195 2.4174e-05 deg
M 125.0583110137553 1.1683e-05 deg
tp 2458313.551486926939
(2018-Jul-14.05148693)
6.2447e-05 TDB
period 1977.489242431085
5.41
1.303e-05
3.567e-08
d
yr
n .1820490307989859 1.1996e-09 deg/d
Q 3.633526692419658 1.5962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2971  
   data-arc span      21219 days (58.09 yr)  
   first obs. used      1962-08-03  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42122  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:09:45  

Additional Information
 Earth MOID = 1.56915 au 
 Jupiter MOID = 1.67619 au 
 T_jup = 3.178 
[ 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 11.17   n/a E2021B10  
diameter diameter 16.361 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.044 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Bennefeld, C.; Cantue, J.; Holly, V.; Jordon, L.; Martin, T.; Soar, E.; Swinney, T. (2009) Minor Planet Bull. 36, 45-48.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.263   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2397 Lappajarvi (1938 DV)          Discovered 1938-Feb-22 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 DV = 1932 AF = 1962 QG = 1972 LF1 = 1976 GK4 = 1978 PR = 1981 CF1 = 1981 FS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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