+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17584 (1994 XF1) Classification: Main-belt Asteroid          SPK-ID: 2017584 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1589508310572806 1.4868e-08   a 2.467420505980697 8.334e-09 au q 2.07522196598729 3.5138e-08 au i 8.439494566260104 6.8872e-07 deg node 82.7337849195396 1.5725e-06 deg peri 111.0448501597837 5.3356e-06 deg M 174.4820421982183 5.3228e-06 deg tp 2458514.362088305226 (2019-Jan-30.86208831) 1.8825e-05 TDB period 1415.673757013378 3.88 7.1724e-06 1.964e-08 d yr n .2542958772927215 1.2884e-09 deg/d Q 2.859619045974104 9.6587e-09 au   Orbit Determination Parameters    # obs. used (total)      2285      data-arc span      15910 days (43.56 yr)      first obs. used      1977-07-17      last obs. used      2021-02-06      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46135      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:07:10   Additional Information  Earth MOID = 1.09044 au   Jupiter MOID = 2.13713 au   T_jup = 3.454  [ 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 13.9   n/a MPO474000   diameter diameter 5.319 km 0.330 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.6392 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm] [Oey, J.; Williams, H.; Groom, R.; Pray, D.; Benishek, V. (2017) Minor Planet Bull. 44, 193-199.] geometric albedo albedo 0.189   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17584 (1994 XF1)          Discovered 1994-Dec-06 by Kobayashi, T. at Oizumi Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1994 XF1 = 1999 BM21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 09:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin