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3446 Combes (1942 EB)
Classification: Main-belt Asteroid          SPK-ID: 2003446
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1573312363531731 3.3876e-08  
a 2.376975573178722 7.2511e-09 au
q 2.003003067469221 7.8823e-08 au
i 7.678154086812014 3.8392e-06 deg
node 34.65513279722946 2.5495e-05 deg
peri 95.63344672247604 2.824e-05 deg
M 216.480734907209 1.3042e-05 deg
tp 2459734.133648114881
(2022-Jun-03.63364811)
4.9549e-05 TDB
period 1338.55279426878
3.66
6.125e-06
1.677e-08
d
yr
n .2689471805231706 1.2307e-09 deg/d
Q 2.750948078888223 8.3919e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2381  
   data-arc span      28765 days (78.75 yr)  
   first obs. used      1942-03-12  
   last obs. used      2020-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44297  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:10:39  

Additional Information
 Earth MOID = 1.03458 au 
 Jupiter MOID = 2.32291 au 
 T_jup = 3.512 
[ 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 13.36   n/a E2021B10  
diameter diameter 8.411 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.6985 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hayes-Gehrke, M.N.; Singh, A.; Malwitz, A.; Wilson, C.; et al. (2019) Minor Planet Bull. 46, 385-386.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.144   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3446 Combes (1942 EB)          Discovered 1942-Mar-12 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 EB = 1975 GL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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