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 ]  
22487 Megphillips (1997 GP23)
Classification: Main-belt Asteroid          SPK-ID: 2022487
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1467721167682579 3.7072e-08  
a 2.768107116894756 1.3942e-08 au
q 2.361826175906833 1.0817e-07 au
i 5.237323951621358 4.4764e-06 deg
node 16.93463616242125 4.0387e-05 deg
peri 280.155097283636 4.3293e-05 deg
M 347.472696430821 1.5204e-05 deg
tp 2459259.036650147040
(2021-Feb-13.53665015)
7.1087e-05 TDB
period 1682.1811602603
4.61
1.2709e-05
3.48e-08
d
yr
n .2140078658022146 1.6168e-09 deg/d
Q 3.174388057882679 1.5988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1366  
   data-arc span      8531 days (23.36 yr)  
   first obs. used      1997-04-06  
   last obs. used      2020-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51806  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:53  

Additional Information
 Earth MOID = 1.35122 au 
 Jupiter MOID = 2.05394 au 
 T_jup = 3.317 
[ 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 14.47   n/a E2021B10  
diameter diameter 3.610 km 0.721 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.283   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22487 Megphillips           Discovered 1997 Apr. 6 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Megan Phillips mentored a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors. She teaches at the International Academy, Bloomfield Hills, Michigan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ show close-approach data ]
Alternate Designations
 1997 GP23 = 1998 RQ62 
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-20 05:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin