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4942 Munroe (1987 DU6)
Classification: Main-belt Asteroid          SPK-ID: 2004942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1361783036480654 3.242e-08  
a 2.201235935565074 6.13e-09 au
q 1.90147535993066 7.4416e-08 au
i 3.833825867428881 3.0765e-06 deg
node 278.0862091822644 5.0264e-05 deg
peri 11.37024926467518 5.1823e-05 deg
M 310.8503282922486 1.3096e-05 deg
tp 2459163.360753065965
(2020-Nov-09.86075307)
4.3432e-05 TDB
period 1192.884287251524
3.27
4.9829e-06
1.364e-08
d
yr
n .3017895397293406 1.2606e-09 deg/d
Q 2.500996511199489 6.9648e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2591  
   data-arc span      23786 days (65.12 yr)  
   first obs. used      1955-06-23  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47771  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:21:52  

Additional Information
 Earth MOID = .885323 au 
 Jupiter MOID = 2.64541 au 
 T_jup = 3.650 
[ 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 13.5   n/a MPO350841  
diameter diameter 3.453 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.936   0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
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)

4942 Munroe           Discovered 1987 Feb. 24 by H. Debehogne at the European Southern Observatory.
Randall Munroe (b. 1984) is a former NASA roboticist and the author of xkcd, a popular webcomic various themes including science, mathematics technology and computer science.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-07-22Last Updated: 2014-08-13

[ show close-approach data ]
Alternate Designations
 1987 DU6 = 1955 MS = 1971 GE = 1990 CB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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