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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782781364935453 3.091e-08  
a 3.083517173672689 1.3459e-08 au
q 2.533793478104478 9.3439e-08 au
i 10.30907273187678 3.4145e-06 deg
node 145.7731839715218 2.1694e-05 deg
peri 296.9000520014185 2.4181e-05 deg
M 161.5193138892125 1.18e-05 deg
tp 2458313.160234434939
(2018-Jul-13.66023443)
6.2504e-05 TDB
period 1977.734475906269
5.41
1.2949e-05
3.545e-08
d
yr
n .182026457234627 1.1918e-09 deg/d
Q 3.6332408692409 1.5858e-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 = 1.56964 au 
 Jupiter MOID = 1.6765 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456861.5 (2014-Jul-23.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798515853094199 3.0873e-08  
q 2.528013061104894 9.3376e-08 au
tp 2456337.045151583373
(2013-Feb-13.54515158)
5.8742e-05 TDB
node 145.7943707032931 2.1702e-05 deg
peri 297.166295721763 2.4141e-05 deg
i 10.30943505453684 3.4147e-06 deg
  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
 Jupiter MOID = 1.6765 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.53160075002016E-16 -2.863461218111746E-15 -2.709002835406099E-13 8.389307682574652E-16 -6.943618816405197E-14 3.304007786935089E-16
q -2.863461218111746E-15 8.719145662261815E-15 9.259532253656259E-13 -1.332504953771314E-15 2.325794496502347E-13 -8.861099910101177E-16
tp -2.709002835406099E-13 9.259532253656259E-13 3.450591428573861E-9 -1.403915172790002E-12 6.453022609624207E-10 -3.240761709128717E-13
node 8.389307682574652E-16 -1.332504953771314E-15 -1.403915172790002E-12 4.709661136907873E-10 -4.631689695574782E-10 1.694487444760972E-11
peri -6.943618816405197E-14 2.325794496502347E-13 6.453022609624207E-10 -4.631689695574782E-10 5.827659863114872E-10 -1.67377127250805E-11
i 3.304007786935089E-16 -8.861099910101177E-16 -3.240761709128717E-13 1.694487444760972E-11 -1.67377127250805E-11 1.166039534247636E-11

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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