+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26003 Amundson (2001 FD104) Classification: Main-belt Asteroid          SPK-ID: 2026003 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05540722335221174 4.5018e-08   a 2.92931595612835 1.9626e-08 au q 2.767010692677949 1.3954e-07 au i 2.294404411433019 5.3365e-06 deg node 37.23409099124576 0.00012495 deg peri 80.84787838482093 0.00014051 deg M 353.9787559377529 6.0557e-05 deg tp 2459031.128905858512 (2020-Jun-30.62890586) 0.00030804 TDB period 1831.25048496193 5.01 1.8404e-05 5.039e-08 d yr n .1965869786554536 1.9757e-09 deg/d Q 3.091621219578752 2.0714e-08 au   Orbit Determination Parameters    # obs. used (total)      820      data-arc span      18123 days (49.62 yr)      first obs. used      1971-03-24      last obs. used      2020-11-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54122      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:28:32   Additional Information  Earth MOID = 1.78434 au   Jupiter MOID = 1.9454 au   T_jup = 3.273  [ 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 14.7   n/a MPO381468   26003 Amundson           Discovered 2001 Mar. 18 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Lauren Amundson (b. 1984) is the librarian/archivist for Lowell Observatory. As such, she is the curator for the Observatory's historical collection which includes extensive material from Percival Lowell's personal research and travels. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2018-10-26 Last Updated: 2019-04-09 [ show close-approach data ] Alternate Designations  2001 FD104 = 1993 QM9 = 2000 AF155 = 4210 T-1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 21:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin