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 ]  
152641 Fredreed (1997 RJ3)
Classification: Main-belt Asteroid          SPK-ID: 2152641
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2332008738962022 4.521e-08  
a 2.585449890336402 1.2849e-08 au
q 1.982520716495113 1.1935e-07 au
i 3.306095457536517 4.8195e-06 deg
node 217.9114838736887 6.3446e-05 deg
peri 123.0628100877635 6.4069e-05 deg
M 202.5999483253835 8.4293e-06 deg
tp 2459864.403539657501
(2022-Oct-11.90353966)
3.6882e-05 TDB
period 1518.457406677232
4.16
1.132e-05
3.099e-08
d
yr
n .2370827119792388 1.7674e-09 deg/d
Q 3.188379064177691 1.5846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      10042 days (27.49 yr)  
   first obs. used      1993-09-16  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:00  

Additional Information
 Earth MOID = .974832 au 
 Jupiter MOID = 2.23596 au 
 T_jup = 3.381 
[ show covariance matrix ]

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 16.39   n/a E2021B55  
rotation period rot_per 18.28 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]

152641 Fredreed           Discovered 1997 Sept. 5 by D. R. DeGraff and S. Weaver at the Stull Observatory of Alfred University.
Frederick Reed (1906-1978), grandfather of the first discoverer, was a dentist in Albany, NY, and amateur astronomer who passed on his love of the night sky to his grandson.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110615/MPCPages.arcLast Updated: 2013-03-28

[ show close-approach data ]
Alternate Designations
 1997 RJ3 = 2006 WM193 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 03:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin