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 ]  
14638 (1998 WQ1)
Classification: Main-belt Asteroid          SPK-ID: 2014638
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1485980967905416 3.6121e-08  
a 3.139275302807893 1.8924e-08 au
q 2.672784967509089 1.1645e-07 au
i 1.161251574134162 4.8136e-06 deg
node 195.9442023033905 0.00021338 deg
peri 255.733743303046 0.00021403 deg
M 295.5412404124788 1.7458e-05 deg
tp 2459364.265891555229
(2021-May-29.76589156)
9.9994e-05 TDB
period 2031.620245221638
5.56
1.8371e-05
5.03e-08
d
yr
n .1771984704556466 1.6023e-09 deg/d
Q 3.605765638106698 2.1737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1164  
   data-arc span      9493 days (25.99 yr)  
   first obs. used      1993-12-09  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:48:46  

Additional Information
 Earth MOID = 1.68972 au 
 Jupiter MOID = 1.58972 au 
 T_jup = 3.193 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456483.5 (2013-Jul-10.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1433403028619034 3.5982e-08  
q 2.694724422501695 1.1546e-07 au
tp 2457325.909431262183
(2015-Oct-30.40943126)
9.8374e-05 TDB
node 195.9445961855689 0.0002142 deg
peri 255.2141334017032 0.00021491 deg
i 1.153690560462866 4.8211e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1164  
   data-arc span      9493 days (25.99 yr)  
   first obs. used      1993-12-09  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:48:46  

Additional Information
 Jupiter MOID = 1.58972 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.294717381040711E-15 -4.112350293372715E-15 5.05397293107708E-13 8.151277200411302E-15 8.730524047037187E-14 -2.914687920780832E-16
q -4.112350293372715E-15 1.333131715102872E-14 -1.15854579720853E-12 -2.646923309200162E-14 -2.217241203875727E-13 1.20033497891127E-15
tp 5.05397293107708E-13 -1.15854579720853E-12 9.677522905784089E-9 1.101560240314509E-12 1.730221412387934E-9 1.36826954232711E-13
node 8.151277200411302E-15 -2.646923309200162E-14 1.101560240314509E-12 4.58831814208661E-8 -4.587388281064091E-8 -2.375756266780018E-10
peri 8.730524047037187E-14 -2.217241203875727E-13 1.730221412387934E-9 -4.587388281064091E-8 4.618689534571527E-8 2.375457432401934E-10
i -2.914687920780832E-16 1.20033497891127E-15 1.36826954232711E-13 -2.375756266780018E-10 2.375457432401934E-10 2.324323401802516E-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 14.0   n/a MPO358773  
diameter diameter 8.177 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14638 (1998 WQ1)          Discovered 1998-Nov-18 by Kobayashi, T. at Oizumi
Reference: 20000418/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1902-Jan-28 16:13 00:03 Jupiter 1.63835139783846 1.63835077595466 1.63835201972151 1.78509931210177 1.46716933217145 2415778.175417376 3.43994003852376 94.2732818318744 47.3920076359028 -57.6569534621172 1447337.45775273 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
1912-Jun-23 16:41 00:03 Jupiter 1.74466860600396 1.74466749667775 1.74466971532948 1.90482651903527 1.63014730084202 2419577.195130496 3.01202703706397 81.1540920599832 19.3991533979418 -85.2563597630295 1560263.51111951 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
1986-Feb-25 22:56 < 00:01 Jupiter 1.75340547204188 1.75340479538428 1.75340614869928 2.47003488265197 2.26603766365917 2446487.455444417 0.990350685403919 54.7637812651409 8.76497363327081 87.7388610198866 1875775.31588812 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
1996-Jul-12 08:37 < 00:01 Jupiter 1.63468022343407 1.6346798601826 1.63468058668546 1.6770238147315 1.33270139988911 2450276.859173559 0.641669351730973 67.3491659286117 48.551112420339 86.3955165318757 2410886.29813479 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2006-Dec-08 03:12 < 00:01 Jupiter 1.8609580316952 1.86095761060357 1.86095845278671 2.26159390630217 2.05048749603361 2454077.633615817 0.341047402667924 51.8041351920512 7.49283852167583 88.9377579670884 2857803.46571014 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2070-Mar-20 22:55 00:02 Jupiter 1.94287961204083 1.94287892672176 1.94288029736034 3.62934989923985 3.50717205625799 2477191.454738279 1.51766937735472 78.1697351013219 18.8972619038095 76.3770481294163 2828413.30734537 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2080-Aug-05 20:26 00:02 Jupiter 1.65468681867132 1.65468628557871 1.65468735176346 1.95409623613901 1.67173747982584 2480982.351630477 1.89595563568356 79.7513350080215 22.8195392790635 -76.0367511021166 1779394.76395944 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2090-Dec-25 15:02 00:02 Jupiter 1.67349851281453 1.67349782024152 1.67349920538688 1.73999984727723 1.41962033106817 2484776.126245484 2.20359720962133 64.6533252942143 36.7393825200005 -84.6473934735535 1875672.12998559 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2101-May-27 19:38 00:02 Jupiter 1.99064623217038 1.99064501988423 1.99064744445744 2.73144922575405 2.57095552604431 2488581.318141139 2.47876440985887 105.854205348142 17.6608233326772 71.0403489113684 2348786.19189431 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2164-Sep-05 23:38 00:04 Jupiter 1.81952770816695 1.81952600474053 1.81952941159896 2.90203250386526 2.7369247478518 2511693.484819895 4.37445332954588 199.708523059038 15.5215848621655 78.3170549614572 2151389.4956395 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2175-Jan-18 01:59 00:05 Jupiter 1.61307179128393 1.6130713782643 1.61307220430301 1.69239693181228 1.34685159243336 2515479.582749715 4.71469584939124 143.862278965647 55.943867250721 -61.3863407647511 1821565.70071578 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49
2185-Jun-09 16:06 00:05 Jupiter 1.77093085423949 1.77092881151847 1.77093289695869 2.01137333874961 1.75756598545217 2519275.170502022 4.9782911822805 106.678119661853 13.6489235977416 87.4336735180976 1244056.04775046 T 24 CATAB v2.0f-lin.ifort 2019-Dec-13 23:49:00 2019-Dec-13 23:49

Alternate Designations
 1998 WQ1 = 1997 SZ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-07 02:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin