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 ]  
198820 Iwanowska (2005 ET249)
Classification: Main-belt Asteroid          SPK-ID: 2198820
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1028847433565427 4.2906e-08  
a 3.079935394582594 2.9899e-08 au
q 2.763057031956231 1.3816e-07 au
i 12.34153930438855 4.847e-06 deg
node 131.9094321866594 2.5322e-05 deg
peri 305.6607690873743 4.0789e-05 deg
M 52.5369144353786 2.9407e-05 deg
tp 2458912.380336622299
(2020-Mar-03.88033662)
0.0001621 TDB
period 1974.289505402027
5.41
2.8748e-05
7.871e-08
d
yr
n .1823440782190112 2.6552e-09 deg/d
Q 3.396813757208956 3.2975e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      6797 days (18.61 yr)  
   first obs. used      2002-08-30  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53473  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:27:13  

Additional Information
 Earth MOID = 1.79977 au 
 Jupiter MOID = 1.82912 au 
 T_jup = 3.185 
[ 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 15.14   n/a MPCxxxxx  
diameter diameter 5.364 km 0.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

198820 Iwanowska           Discovered 2005 Mar. 13 by K. Cernis and J. Zdanavicius at the Moletai Astronomical Observatory in Lithuania.
Wilhelmina Iwanowska (1905-1999), distinguished Polish astronomer, worked at the Vilnius (1927-1940) and Torun (1945-1999) universities and was the Vice-President of the IAU from 1973 to 1979. She was the first Director of the Institute of Astronomy of the Copernicus University in Torun.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09

[ 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
1926-Jul-31 05:19 00:04 Jupiter 1.88720440062551 1.88720365603765 1.88720514522657 4.19890572518735 4.09061870782002 2424727.721406063 3.85938093840524 335.780521931894 21.9910732401679 85.5977716147094 2992738.77209246 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27
1986-Mar-22 18:56 00:01 Jupiter 1.92112035154126 1.9211197078458 1.92112099523771 4.26626044921943 4.1616316091087 2446512.288858368 1.36974997010815 123.038609489531 23.1203295622588 80.7539460971252 2945917.68206773 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27
1996-Feb-10 06:40 < 00:01 Jupiter 1.9868811245798 1.9868805272649 1.98688172189481 3.34030519986133 3.21014386607185 2450123.777767503 0.973053413599708 82.4634269363022 28.6739507623565 -84.8671532904034 3347144.29485063 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27
2045-Nov-13 16:39 00:01 Jupiter 1.9720718503467 1.97207107805596 1.97207262263833 4.29255626690517 4.1913030674439 2468298.193749927 1.22198969619455 101.849609870024 23.5588112299397 73.9605175451239 2844113.48826799 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27
2055-Oct-07 20:53 00:02 Jupiter 1.92900460972894 1.92900397057797 1.92900524888101 3.57297716228315 3.44789346424911 2471913.369808820 1.71834175640189 115.738109360877 25.5433926893882 -78.6042789789678 2931852.73878877 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27
2115-Jun-02 04:31 00:04 Jupiter 1.88322433716144 1.88322346885481 1.88322520548145 3.76787381328386 3.64655016149838 2493699.688062538 4.21378144994074 298.920119892104 21.4036651590883 -81.4836862387272 2952746.82519329 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27
2175-Jan-22 01:11 00:07 Jupiter 1.85517112987961 1.85517051728769 1.8551717425039 3.91277357465162 3.79429169535548 2515483.549224305 6.6800134963944 546.880798918054 19.5422865248793 -86.8850427914479 2996964.05989017 T 22 CATAB v2.0g-lin.ifort 2021-May-04 10:27:15 2021-May-04 10:27

Alternate Designations
 2005 ET249 = 2004 BR161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-16 07:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin