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 ]  
21500 Vazquez (1998 KS6)
Classification: Main-belt Asteroid          SPK-ID: 2021500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188235494965422 4.6912e-08  
a 2.326997984716296 7.6347e-09 au
q 2.050495824501005 1.0795e-07 au
i 4.289437181896734 3.5855e-06 deg
node 101.1349280665567 6.6062e-05 deg
peri 50.90843353306489 6.7817e-05 deg
M 200.5710091925997 1.67e-05 deg
tp 2459774.692127606866
(2022-Jul-14.19212761)
6.1277e-05 TDB
period 1296.559458174007
3.55
6.3809e-06
1.747e-08
d
yr
n .2776579182161081 1.3665e-09 deg/d
Q 2.603500144931586 8.5419e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1187  
   data-arc span      21918 days (60.01 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:46:28  

Additional Information
 Earth MOID = 1.06434 au 
 Jupiter MOID = 2.39048 au 
 T_jup = 3.560 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457306.5 (2015-Oct-11.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182817413009573 4.6688e-08  
q 2.052026340440545 1.074e-07 au
tp 2457179.028022674207
(2015-Jun-05.52802267)
5.7674e-05 TDB
node 101.1557830788443 6.6048e-05 deg
peri 50.44096317600946 6.7853e-05 deg
i 4.289629442910666 3.5834e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1187  
   data-arc span      21918 days (60.01 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:46:28  

Additional Information
 Jupiter MOID = 2.39048 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.179749803312586E-15 -5.00498495957317E-15 9.981867196039631E-13 -3.799631918504155E-14 2.906692305709554E-13 -1.710230540999943E-15
q -5.00498495957317E-15 1.153498843158176E-14 -2.226849043009301E-12 8.808586905129917E-14 -6.511102748583556E-13 4.02948495025011E-15
tp 9.981867196039631E-13 -2.226849043009301E-12 3.326313727033745E-9 -1.892599696803466E-11 9.281971203005949E-10 -1.71112041367749E-12
node -3.799631918504155E-14 8.808586905129917E-14 -1.892599696803466E-11 4.362335008861272E-9 -4.354680380486444E-9 6.708780389481372E-11
peri 2.906692305709554E-13 -6.511102748583556E-13 9.281971203005949E-10 -4.354680380486444E-9 4.603983664112806E-9 -6.736623652856904E-11
i -1.710230540999943E-15 4.02948495025011E-15 -1.71112041367749E-12 6.708780389481372E-11 -6.736623652856904E-11 1.284096538479891E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.57   n/a MPCxxxxx  
diameter diameter 4.847 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21500 Vasquez           Discovered 1998 May 22 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Angel Vasquez (b. 1955), PC network specialist and telescope operator at the Arecibo Observatory, has played a key role in numerous radar experiments on minor planets since the 1970s.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

Alternate Designations
 1998 KS6 = 1995 MK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-18 13:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin