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7564 Gokumenon (1988 CA)
Classification: Main-belt Asteroid          SPK-ID: 2007564
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2045998644170732 3.3851e-08  
a 2.763991032878809 9.5098e-09 au
q 2.198478842301799 9.4768e-08 au
i 10.86715405022338 4.2543e-06 deg
node 157.0569476977946 1.8543e-05 deg
peri 350.4855344116988 2.0779e-05 deg
M 40.14945621883024 9.5484e-06 deg
tp 2459013.310907718497
(2020-Jun-12.81090772)
4.4175e-05 TDB
period 1678.43053350585
4.60
8.6622e-06
2.372e-08
d
yr
n .2144860885294097 1.1069e-09 deg/d
Q 3.32950322345582 1.1455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2389  
   data-arc span      24605 days (67.36 yr)  
   first obs. used      1953-09-07  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:38:04  

Additional Information
 Earth MOID = 1.21047 au 
 Jupiter MOID = 1.68063 au 
 T_jup = 3.284 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456785.5 (2014-May-08.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2052172370534942 3.396e-08  
q 2.19645107462006 9.5114e-08 au
tp 2457336.355293539737
(2015-Nov-09.85529354)
4.1695e-05 TDB
node 157.0776724815602 1.8539e-05 deg
peri 350.8122437316736 2.0741e-05 deg
i 10.86879130227936 4.2548e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2389  
   data-arc span      24605 days (67.36 yr)  
   first obs. used      1953-09-07  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:38:04  

Additional Information
 Jupiter MOID = 1.68063 au 
 T_jup = 3.284 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.153290161813154E-15 -3.220157618817946E-15 4.45502385100224E-13 -4.785051692695387E-16 1.162558704135081E-13 -1.295621279479453E-15
q -3.220157618817946E-15 9.046600934616549E-15 -1.187566515705532E-12 3.61209941659644E-15 -3.199287987958428E-13 4.214132148908269E-15
tp 4.45502385100224E-13 -1.187566515705532E-12 1.738510072983958E-9 1.85228149170371E-12 3.984803697383677E-10 5.820028656469416E-13
node -4.785051692695387E-16 3.61209941659644E-15 1.85228149170371E-12 3.436894662242155E-10 -3.36800842100087E-10 2.230562518081441E-11
peri 1.162558704135081E-13 -3.199287987958428E-13 3.984803697383677E-10 -3.36800842100087E-10 4.301829425777835E-10 -2.180945408320291E-11
i -1.295621279479453E-15 4.214132148908269E-15 5.820028656469416E-13 2.230562518081441E-11 -2.180945408320291E-11 1.81029084854987E-11

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 12.85   n/a E2021B10  
diameter diameter 8.533 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 30.58 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Cooney, W.R.; Robinson, L. (2002) Minor Planet Bull. 29, 78-79.]
geometric albedo albedo 0.221   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B S   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)

7564 Gokumenon           Discovered 1988 Feb. 7 by R. Rajamohan at Kavalur.
M. G. K. ("Goku") Menon (b. 1928), Vikram Sarabhai Distinguished professor of the Indian Space Research Organization, is renowned for his experimental cosmic-ray work at the Tata Institute. He provided strong support for building the 2.3-m telescope at Kavalur and the radioastronomy facility at Ootacamund.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

[ show close-approach data ]
Alternate Designations
 1988 CA = 1982 YD2 = 1990 RK10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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