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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1920067503765382 2.8477e-08  
a 2.283401445602777 4.3218e-09 au
q 1.844972954227499 6.5346e-08 au
i 7.144955563791262 3.293e-06 deg
node 154.5100388738625 2.708e-05 deg
peri 196.4078310026323 2.8533e-05 deg
M 116.509090441853 1.0209e-05 deg
tp 2458592.623066582034
(2019-Apr-19.12306658)
3.5265e-05 TDB
period 1260.293900446764
3.45
3.578e-06
9.796e-09
d
yr
n .2856476571634464 8.1097e-10 deg/d
Q 2.721829936978056 5.1516e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3289  
   data-arc span      38433 days (105.22 yr)  
   first obs. used      1915-08-11  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:25:35  

Additional Information
 Earth MOID = .839922 au 
 Jupiter MOID = 2.70555 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 12.1   n/a MPO435702  
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. 2019-August); 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.]
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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