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507 Laodica (A903 DC)
Classification: Main-belt Asteroid          SPK-ID: 2000507
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .100820478969637 1.9362e-08  
a 3.154572011175414 1.234e-08 au
q 2.836526550064498 6.0889e-08 au
i 9.49812057901595 9.6692e-07 deg
node 293.4293440368202 4.3557e-06 deg
peri 100.4645176215469 1.0542e-05 deg
M 111.0365516024612 1.3614e-05 deg
tp 2458569.291904269930
(2019-Mar-26.79190427)
7.5848e-05 TDB
period 2046.487496084922
5.60
1.2008e-05
3.288e-08
d
yr
n .1759111651982755 1.0322e-09 deg/d
Q 3.472617472286331 1.3584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3025  
   data-arc span      41824 days (114.51 yr)  
   first obs. used      1906-09-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40007  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:30:06  

Additional Information
 Earth MOID = 1.86225 au 
 Jupiter MOID = 1.95541 au 
 T_jup = 3.178 
[ 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 9.22   n/a E2021B10  
diameter diameter 45.170 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.706 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Robinson, L. (2002) Minor Planet Bull. 29, 13.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Black, S.; Linville, D.; Michalik, D.; Wolf, M.; Ditteon, R. (2016) Minor Planet Bull. 43, 287-289.]
[Mansego, E.A.; Rodriguez, P.B.; de Haro, J.L.; Chiner, O.R.; et al. (2016) Minor Planet Bull. 43, 332-336.]
[Hess, K.; Bruner, M.; Ditteon, R. (2017) Minor Planet Bull. 44, 3-5.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.198   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

507 Laodica (A903 DC)          Discovered 1903-Feb-19 by Dugan, R. S. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A903 DC = 1953 GK1 = 1958 AK = 1974 YC = A896 YB = A912 VP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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