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95449 Frederickgregory (2002 CJ261)
Classification: Main-belt Asteroid          SPK-ID: 2095449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09839557173328314 6.9968e-08  
a 2.73448883105933 2.3899e-08 au
q 2.46542723912897 1.8165e-07 au
i 11.88180263943071 5.8047e-06 deg
node 137.3356520265982 2.8032e-05 deg
peri 241.4828986092068 3.6775e-05 deg
M 188.7427759108523 2.5315e-05 deg
tp 2459986.204168256670
(2023-Feb-10.70416826)
0.0001192 TDB
period 1651.629600309077
4.52
2.1652e-05
5.928e-08
d
yr
n .217966546453655 2.8574e-09 deg/d
Q 3.00355042298969 2.625e-08 au
  Orbit Determination Parameters
   # obs. used (total)      484  
   data-arc span      8084 days (22.13 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59242  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:06:32  

Additional Information
 Earth MOID = 1.48818 au 
 Jupiter MOID = 2.46633 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457313.5 (2015-Oct-18.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0961593740700568 6.964e-08  
q 2.474715854333629 1.8023e-07 au
tp 2456680.652308051962
(2014-Jan-23.15230805)
0.00011576 TDB
node 137.3857391019823 2.7993e-05 deg
peri 241.488560361287 3.7188e-05 deg
i 11.8846379074162 5.8058e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      484  
   data-arc span      8084 days (22.13 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59242  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:06:32  

Additional Information
 Jupiter MOID = 2.46633 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.849690864959157E-15 -1.248271548873602E-14 -1.249238798029635E-12 8.456862620566662E-15 -3.018592547511519E-13 1.627588308420215E-15
q -1.248271548873602E-14 3.248444332045203E-14 3.30255357298096E-12 -2.304940908376996E-14 8.18478031413959E-13 -3.717624220661195E-15
tp -1.249238798029635E-12 3.30255357298096E-12 1.339954082512291E-8 -1.564317369255047E-11 2.876320179531607E-9 -2.636923954322577E-12
node 8.456862620566662E-15 -2.304940908376996E-14 -1.564317369255047E-11 7.836168794354345E-10 -7.697612802171821E-10 6.369558890763148E-11
peri -3.018592547511519E-13 8.18478031413959E-13 2.876320179531607E-9 -7.697612802171821E-10 1.382913780666068E-9 -6.28049423877124E-11
i 1.627588308420215E-15 -3.717624220661195E-15 -2.636923954322577E-12 6.369558890763148E-11 -6.28049423877124E-11 3.37070697922521E-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 15.58   n/a E2021B10  
diameter diameter 2.813 km 0.336 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.204   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

95449 Frederickgregory           Discovered 2002 Feb. 7 by M. W. Buie at Kitt Peak.
Frederick Drew Gregory (b. 1941) is a retired American astronaut who was the pilot on one space shuttle mission and commander on two other missions. In 1989, he was the first African American to command a space flight. He also served as Deputy Administrator at NASA.
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 2021-01-27Last Updated: 2021-02-23

[ show close-approach data ]
Alternate Designations
 2002 CJ261 = 2000 WG162 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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