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1949 Messina (1936 NE)
Classification: Main-belt Asteroid          SPK-ID: 2001949
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2296210955510595 3.5002e-08  
a 2.38318400839178 7.6581e-09 au
q 1.835954685485094 8.4174e-08 au
i 4.654198968799695 3.3359e-06 deg
node 264.9907206503601 5.0237e-05 deg
peri 66.47472307373938 5.1144e-05 deg
M 306.0313971076407 1.4088e-05 deg
tp 2459401.952873076893
(2021-Jul-06.45287308)
5.3208e-05 TDB
period 1343.80047696119
3.68
6.4773e-06
1.773e-08
d
yr
n .2678969133975067 1.2913e-09 deg/d
Q 2.930413331298466 9.4166e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2236  
   data-arc span      30722 days (84.11 yr)  
   first obs. used      1936-07-08  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4687  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:09:06  

Additional Information
 Earth MOID = .829377 au 
 Jupiter MOID = 2.45273 au 
 T_jup = 3.496 
[ show covariance matrix ]

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 13.42   n/a E2021B10  
diameter diameter 3.560 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.6491 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Bianchi, E.; Padova, E. (1921) Mem. Soc. Astron. Ital. 2, 45-54.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.608   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1949 Messina           Discovered 1936 July 8 by C. Jackson at Johannesburg.
Named for a copper-mining town on the border between South Africa and Zimbabwe-Rhodesia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5183Last Updated: 2006-03-21

[ show close-approach data ]
Alternate Designations
 1936 NE = 1940 RK = 1951 SP = 1951 TN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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