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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1366130533319376 5.3955e-08  
a 2.201510123180808 1.1273e-08 AU
q 1.900755103311907 1.2064e-07 AU
i 3.834665490437888 5.458e-06 deg
node 278.1675849593063 9.0094e-05 deg
peri 11.22570898701971 9.3679e-05 deg
M 7.098617017881916 2.8199e-05 deg
tp 2456776.973858639300
(2014-Apr-29.47385864)
9.3389e-05 JED
period 1193.107174047678
3.27
9.1643e-06
2.509e-08
d
yr
n .3017331618069827 2.3176e-09 deg/d
Q 2.502265143049708 1.2813e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1245  
   data-arc span      21557 days (59.02 yr)  
   first obs. used      1955-06-23  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53007  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:10:40  

Additional Information
 Earth MOID = .883959 AU 
 T_jup = 3.649 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO265984  
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: 2013-11-20

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