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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782780472965373 1.9039e-08  
a 3.083517148196103 1.2788e-08 au
q 2.533793732210315 5.9341e-08 au
i 10.30906907095364 2.2211e-07 deg
node 145.7731983406774 2.638e-06 deg
peri 296.9000488719355 6.4132e-06 deg
M 161.5193074854487 8.0384e-06 deg
tp 2458313.160280612386
(2018-Jul-13.66028061)
4.13e-05 TDB
period 1977.73445139566
5.41
1.2303e-05
3.368e-08
d
yr
n .1820264594905311 1.1323e-09 deg/d
Q 3.633240564181892 1.5068e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3033  
   data-arc span      21391 days (58.57 yr)  
   first obs. used      1962-08-03  
   last obs. used      2021-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:43:54  

Additional Information
 Earth MOID = 1.56964 au 
 Jupiter MOID = 1.6765 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456919.5 (2014-Sep-19.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798125241360613 1.9047e-08  
q 2.528194179150197 5.9445e-08 au
tp 2456337.037160595778
(2013-Feb-13.53716060)
3.6914e-05 TDB
node 145.7935209688494 2.6391e-06 deg
peri 297.1728492273044 6.3913e-06 deg
i 10.30933038982287 2.2212e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3033  
   data-arc span      21391 days (58.57 yr)  
   first obs. used      1962-08-03  
   last obs. used      2021-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:43:54  

Additional Information
 Jupiter MOID = 1.6765 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.627867274908957E-16 -1.114260400720136E-15 -3.14308789321233E-14 2.869683860139004E-14 -3.748283448491728E-14 -1.870630998315419E-15
q -1.114260400720136E-15 3.533754681875173E-15 1.68465496387304E-13 -8.727397266088318E-14 1.317557467877754E-13 5.779246166400606E-15
tp -3.14308789321233E-14 1.68465496387304E-13 1.36262739114865E-9 -2.753672716946426E-11 2.158639815262469E-10 2.817873163040116E-12
node 2.869683860139004E-14 -8.727397266088318E-14 -2.753672716946426E-11 6.964697424876594E-12 -1.037866004635529E-11 -1.340772022628509E-13
peri -3.748283448491728E-14 1.317557467877754E-13 2.158639815262469E-10 -1.037866004635529E-11 4.084868942699552E-11 5.339140642421193E-13
i -1.870630998315419E-15 5.779246166400606E-15 2.817873163040116E-12 -1.340772022628509E-13 5.339140642421193E-13 4.933719387388567E-14

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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