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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1786794671863459 3.217e-08  
a 3.083931997830318 1.4942e-08 au
q 2.532896671619073 9.8206e-08 au
i 10.3084186403018 4.0724e-06 deg
node 145.774849561557 2.2196e-05 deg
peri 297.0045063138558 2.5259e-05 deg
M 52.14506633539397 1.2037e-05 deg
tp 2458313.972480541605
(2018-Jul-14.47248054)
6.5661e-05 TDB
period 1978.133584902701
5.42
1.4376e-05
3.936e-08
d
yr
n .1819897315062812 1.3226e-09 deg/d
Q 3.634967324041562 1.7611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2462  
   data-arc span      20734 days (56.77 yr)  
   first obs. used      1962-08-03  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43969  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 20:38:55  

Additional Information
 Earth MOID = 1.56899 au 
 Jupiter MOID = 1.67539 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 11.0   n/a MPO435719  
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. 2019-January); 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.]
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

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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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