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 ]  
17855 Geffert (1998 KK)
Classification: Main-belt Asteroid          SPK-ID: 2017855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142687643424934 3.1556e-08  
a 3.099657799305263 1.5766e-08 au
q 2.657374932498678 9.4933e-08 au
i 5.193172160197242 4.1348e-06 deg
node 245.1080905066595 4.2992e-05 deg
peri 225.5869142144954 4.5751e-05 deg
M 117.0549591775191 1.5603e-05 deg
tp 2458352.378587499102
(2018-Aug-21.87858750)
8.5786e-05 TDB
period 1993.283412678632
5.46
1.5208e-05
4.164e-08
d
yr
n .1806065297639845 1.378e-09 deg/d
Q 3.541940666111847 1.8016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      25038 days (68.55 yr)  
   first obs. used      1951-11-29  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:16:28  

Additional Information
 Earth MOID = 1.67729 au 
 Jupiter MOID = 1.62018 au 
 T_jup = 3.200 
[ 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 13.0   n/a MPO474003  
diameter diameter 14.754 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17855 Geffert           Discovered 1998 May 19 at the Starkenburg Observatory, Heppenheim.
The German amateur astronomer Martin Geffert (b. 1922) has been very dedicated to the Starkenburg Observatory, being one of the founders and treasurer of the observatory since its beginnings in 1970. He is also an excellent performer on the mandolin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ 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
1900-Sep-22 18:26 00:03 Jupiter 1.88373863590748 1.8837372475412 1.88374002427643 2.78164174543231 2.61500122302714 2415285.267747718 2.78864379449836 147.476463867235 16.7028608199673 70.9626606883465 2190190.93743927 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
1951-Sep-21 07:20 00:02 Jupiter 1.86984074884487 1.86983995377743 1.86984154391285 3.03724182423126 2.88424241531976 2433910.805652767 1.60749261899417 86.7061945369026 16.6238498765316 79.911633796952 2274178.25540386 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
1961-Jul-27 18:30 00:01 Jupiter 1.62596239509827 1.62596203871686 1.62596275147996 1.79013740555764 1.47061882288226 2437508.271147476 1.36838282534923 129.321119297754 35.825615469069 73.8814472393083 3405331.08210073 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
2022-Jul-04 13:13 < 00:01 Jupiter 1.7720105842911 1.77201013360318 1.77201103497882 2.40634564036919 2.19874912097951 2459765.050614784 0.308972774680958 42.40669522159 9.92837618149014 -84.5349233901672 2441835.32599823 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
2032-May-09 18:39 < 00:01 Jupiter 1.66360034507829 1.66359991909269 1.66360077106389 1.99299387979221 1.71864019616359 2463362.276828491 0.535508832135222 90.8667738077206 24.1805225956135 80.339904820699 2640518.79152239 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
2093-Apr-12 14:54 00:02 Jupiter 1.69046966952273 1.69046897434725 1.69047036469773 1.90153047012853 1.61669512207432 2485615.121099192 2.1803840123044 104.441312636081 29.4036542415413 -65.0884145082772 1567310.27566468 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
2103-Feb-23 16:59 00:02 Jupiter 1.74170478080296 1.74170369560182 1.7417058660039 2.28551579729741 2.06178231396188 2489218.207430553 2.3000252452617 95.2470896133601 15.4944556113954 81.8729643369981 1348382.5278821 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
2164-Jan-22 01:34 00:04 Jupiter 1.63952773533155 1.63952710099802 1.63952836966509 1.61310863074215 1.25254446042307 2511465.565339969 4.07560571842502 175.316085700863 64.8733589856801 -62.5759498532124 1793152.60604106 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16
2173-Dec-13 14:32 00:04 Jupiter 1.84102054742836 1.84101842063023 1.84102267422963 2.62973421383421 2.44853747239718 2515079.105615296 4.00572667651982 178.117202715417 19.7824740884964 70.5527825771691 1624094.44203431 T 29 CATAB v2.0f-lin.ifort 2020-Jun-23 18:16:47 2020-Jun-23 18:16

Alternate Designations
 1998 KK = 1990 WO15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-24 09:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin