+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1722 Goffin (1938 EG) Classification: Main-belt Asteroid          SPK-ID: 2001722 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 47 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05017500902815188 1.7633e-08   a 2.513711599231394 6.4901e-09 au q 2.387586097045789 4.6296e-08 au i 5.46559648666495 5.6173e-07 deg node 168.0223567206636 6.8732e-06 deg peri 284.8579381105325 1.8179e-05 deg M 337.1217281207542 1.8251e-05 deg tp 2459293.010774428815 (2021-Mar-19.51077443) 7.3843e-05 TDB period 1455.699056736234 3.99 5.6377e-06 1.544e-08 d yr n .2473038629338278 9.5777e-10 deg/d Q 2.639837101416999 6.8158e-09 au   Orbit Determination Parameters    # obs. used (total)      3238      data-arc span      30345 days (83.08 yr)      first obs. used      1938-02-23      last obs. used      2021-03-24      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41998      source      ORB      producer      Otto Matic      solution date      2021-May-03 19:42:32   Additional Information  Earth MOID = 1.41112 au   Jupiter MOID = 2.43452 au   T_jup = 3.452  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.10   n/a E2021B10   diameter diameter 10.290 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 29.19 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (1984) http://www.asu.cas.cz/~ppravec/neo.htm] [Ditteon, R.; Adam, A.; Doyel, M.; Gibson, J.; et al. (2018) Minor Planet Bull. 45, 13-16.] geometric albedo albedo 0.224   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.890   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.11 deg. 1722 Goffin (1938 EG)          Discovered 1938-Feb-23 by Delporte, E. at Uccle Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1938 EG = 1942 DJ = 1950 HK = 1952 SW = 1952 UQ = 1960 WB = 1964 UF = 1964 VD1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jun-23 04:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin