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809 Lundia (A915 PF)
Classification: Main-belt Asteroid          SPK-ID: 2000809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1923158431096753 1.0955e-08  
a 2.282864142685152 3.628e-09 au
q 1.843833200379811 2.5376e-08 au
i 7.146078844047205 2.9065e-07 deg
node 154.5107637260101 1.7809e-06 deg
peri 196.4392859742543 4.2995e-06 deg
M 229.5942174425072 3.3158e-06 deg
tp 2459852.865573760081
(2022-Sep-30.36557376)
1.2094e-05 TDB
period 1259.849090520177
3.45
3.0033e-06
8.223e-09
d
yr
n .2857485096499613 6.8117e-10 deg/d
Q 2.721895084990493 4.3257e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3910  
   data-arc span      38708 days (105.98 yr)  
   first obs. used      1915-08-11  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39618  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:01:58  

Additional Information
 Earth MOID = .837971 au 
 Jupiter MOID = 2.70631 au 
 T_jup = 3.569 
[ 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 12.24   n/a MPO636073  
diameter diameter 9.450 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.4142 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kryszczynska, A.; Kwiatkowski, T.; Hirsch, R.; Polinska, M.; et al. (2005) CBET 239.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kryszczynska, A.; Colas, F.; Descamps, P.; Bartczak, P.; et al. (2009) Astron. Astrophys. 501, 769-776.]
[Marchis, F.; Enriquez, J.E.; Emery, J.P.; Mueller, M.; et al. (2012) Icarus 221, 1130-1161.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Bartczak, P.; Kryszczynska, A.; Dudzinski, G.; Polinska, M.; et al. (2017) Mon. Not. Royal Ast. Soc. 47, 941-947.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.379   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

809 Lundia (A915 PF)          Discovered 1915-Aug-11 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A915 PF = 1936 VC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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