Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
27669 (1979 MQ4)
Classification: Main-belt Asteroid          SPK-ID: 2027669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0414471211507805 3.3637e-08  
a 3.062930151329601 1.7326e-08 au
q 2.935980514271065 1.0268e-07 au
i 8.903622411131275 3.7259e-06 deg
node 259.8793298827134 2.992e-05 deg
peri 193.4457249925177 6.7235e-05 deg
M 70.87603056222747 5.8726e-05 deg
tp 2458615.020796984072
(2019-May-11.52079698)
0.00032 TDB
period 1957.961132768224
5.36
1.6614e-05
4.549e-08
d
yr
n .183864732539926 1.5601e-09 deg/d
Q 3.189879788388137 1.8044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1623  
   data-arc span      14919 days (40.85 yr)  
   first obs. used      1979-06-23  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:12:49  

Additional Information
 Earth MOID = 1.95325 au 
 Jupiter MOID = 1.98869 au 
 T_jup = 3.213 
[ 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 13.2   n/a MPO502365  
diameter diameter 7.393 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 84.693 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.202   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27669 (1979 MQ4)          Discovered 1979-Jun-25 by Helin, E. F., Bus, S. J. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1979 MQ4 = 1999 GL52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-04 09:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin