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7824 Lynch (1991 RM2)
Classification: Main-belt Asteroid          SPK-ID: 2007824
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .208818222489397 7.2123e-09  
a 2.259709258773571 5.377e-09 au
q 1.787840788013641 1.5558e-08 au
i 8.717792398694776 2.8334e-07 deg
node 167.8463282947193 3.352e-06 deg
peri 187.6191021966759 5.317e-06 deg
M 222.8304803395717 3.3609e-06 deg
tp 2459673.250929628489
(2022-Apr-03.75092963)
1.2678e-05 TDB
period 1240.729974760958
3.40
4.4285e-06
1.212e-08
d
yr
n .2901517713951889 1.0356e-09 deg/d
Q 2.7315777295335 6.4998e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2454  
   data-arc span      35613 days (97.50 yr)  
   first obs. used      1923-09-13  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45252  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:04:14  

Additional Information
 Earth MOID = .781673 au 
 Jupiter MOID = 2.71235 au 
 T_jup = 3.577 
[ 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 13.71   n/a E2021B10  
diameter diameter 4.899 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 75.30 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
geometric albedo albedo 0.321   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7824 Lynch           Discovered 1991 Sept. 7 by E. F. Helin at Palomar.
Named in honor of William Lynch III of the Jet Propulsion Laboratory and an outstanding model of efficiency, friendliness and dedication to his work and responsibilities. He is the epitome of the NASA/JPL motto, "Faster, better and cheaper", in the sense that anyone who works in a highly-charged, positive fashion, streamlined for action, leads to a more successful and economical operation. Always with a big smile and a cheerful greeting, he is one of JPL's biggest assets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980211/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1991 RM2 = 1994 NR = A923 RE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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