+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22378 Gaherty (1994 AY10) Classification: Main-belt Asteroid          SPK-ID: 2022378 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2070325907008022 2.9309e-08   a 2.253469678077403 6.9235e-09 au q 1.786928012559336 6.5913e-08 au i 3.132182087669503 4.1302e-06 deg node 45.19306933676168 5.8929e-05 deg peri 234.9481094903534 5.9807e-05 deg M 204.9650827188995 1.0853e-05 deg tp 2459732.611966896858 (2022-Jun-02.11196690) 3.8284e-05 TDB period 1235.594609539105 3.38 5.6943e-06 1.559e-08 d yr n .2913576971125549 1.3427e-09 deg/d Q 2.72001134359547 8.3569e-09 au   Orbit Determination Parameters    # obs. used (total)      1276      data-arc span      10934 days (29.94 yr)      first obs. used      1991-03-12      last obs. used      2021-02-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52031      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:05:10   Additional Information  Earth MOID = .770934 au   Jupiter MOID = 2.4218 au   T_jup = 3.595  [ 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 15.7   n/a MPO449118   diameter diameter 4.770 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.049   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22378 Gaherty           Discovered 1994 Jan. 8 by Spacewatch at Kitt Peak. Geoff Gaherty (b. 1941) is an amateur astronomer who writes about observing and won the Chant Medal of the Royal Astronomical Society of Canada in 2008. Name suggested by R. and P. Jedicke. 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 2016-08-18 Last Updated: 2016-08-22 [ show close-approach data ] Alternate Designations  1994 AY10 = 1998 HG81  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 02:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin