Occultation of UCAC4 635-003648 by 16785 1997 AL1 on 2023 Oct 8 Distance from center of occultation path - in km Distances are positive to the right, referenced to the direction of motion along the path Uncertainty in time = +/- 3 secs d Proba- Location Longitude Latitude alt U.T. Sepn Alt Sun km bility o ' o ' m h m s " o o 39 - 0% ** Path limit plus 3-Sigma ** 39 N 0% BELMONT CA HART~JIM -122 15. 37 35. 0 11 0 8 -0.027 56 -38 38 N 0% G65 Vulcan North, Lick Observat -121 35. 37 25. 1215 11 0 3 -0.027 56 -37 38 N 0% 662 Lick Observatory, Mount Ham -121 35. 37 25. 1251 11 0 3 -0.027 56 -37 35 N 1% Prescott AZ Bob Thompson -112 25. 34 35. 0 10 59 1 -0.025 48 -32 35 N 1% PaloAlto CA Lum, Stanford -122 5. 37 25. 0 11 0 6 -0.024 56 -38 33 N 1% San Jose CA Dr Backus -121 45. 37 15. 0 11 0 4 -0.024 56 -37 33 N 2% Los Altos CA ADLER~ALAN -122 5. 37 25. 0 11 0 6 -0.023 56 -38 32 N 2% Mtn View CA SETI Peter Backus -122 5. 37 25. 0 11 0 6 -0.022 56 -38 31 - 2% ** Path limit plus 2-Sigma ** 30 N 3% Prescott AZ Donald Didlein -112 25. 34 35. 1715 10 59 0 -0.022 48 -32 29 N 4% Fresno CA Clarence Funk -119 45. 36 45. 0 10 59 50 -0.021 54 -36 29 N 4% HALF MOON BAY CA FRANK~CHRISTOPH -122 25. 37 25. 0 11 0 8 -0.021 56 -38 28 N 5% Sunnyvale CA Sielski~Hank -122 5. 37 25. 0 11 0 5 -0.020 56 -38 27 N 6% CAMPBELL CA BALDRIDGE~RICHA -122 5. 37 25. 115 11 0 6 -0.019 56 -38 27 N 6% SANTA CLARA CA OKASAKI~KENT -122 5. 37 25. 115 11 0 6 -0.019 56 -38 27 N 7% Nine-Brick OBS W Cheng -122 5. 37 25. 100 11 0 5 -0.019 56 -38 26 N 8% Silicon Valley - Thad Floryan -122 5. 37 25. 78 11 0 6 -0.019 56 -38 25 N 10% 684 Prescott -112 25. 34 35. 1763 10 59 1 -0.018 48 -32 24 N 13% LAS CRUCES NM STEVENS JR.~BER -106 45. 32 25. 1341 10 58 23 -0.017 43 -28 23 N 16% Las Cruces NM Stein~William & -106 45. 32 25. 1329 10 58 23 -0.016 43 -28 22 N 16% 3 Rivers CA - Richard Stanton -118 55. 36 25. 330 10 59 44 -0.016 53 -36 22 N 17% Las Cruces NM MILLER~FRANKLIN -106 45. 32 25. 1311 10 58 23 -0.016 43 -28 22 - 16% ** Path limit plus 1-Sigma ** 22 N 18% SAN JOSE CA JAMES H. VAN NULAND -121 55. 37 15. 73 11 0 5 -0.015 56 -38 21 N 19% San Jose, CA - Rudy Norvelle -121 45. 37 15. 0 11 0 4 -0.015 56 -38 21 N 20% SJAA - Houge Park -121 55. 37 15. 14 11 0 5 -0.015 56 -38 16 N 40% LasCrucs NM Rich Richins -106 45. 32 15. 1362 10 58 23 -0.011 43 -28 15 N 45% LasCrucs NM Robert A. James -106 45. 32 15. 1191 10 58 23 -0.010 43 -28 13 - 50% *** Path limit *** 13 N 53% LosGatos CA OakridgeO Baldridge -122 5. 37 15. 732 11 0 5 -0.009 56 -38 12 N 55% MORGAN HILL CA Breit~Derek C. -121 45. 37 5. 282 11 0 3 -0.009 56 -38 7 N 75% 714 Bagdad -113 15. 34 35. 1193 10 59 5 -0.005 48 -32 5 N 80% G99 NF Observatory, Silver City -108 15. 32 45. 1892 10 58 32 -0.004 44 -29 3 N 85% Cima Pinto Valley Obs CA -115 25. 35 15. 1615 10 59 19 -0.002 50 -34 0 - 88% **** Centre Line **** 0 S 87% SPRINGVILLE CA SANFORD~JOHN -118 45. 36 15. 649 10 59 42 0.000 53 -36 -1 S 87% BonnyDun CA Nolthenius mobile -122 5. 37 5. 866 11 0 5 0.001 56 -38 -2 S 86% Springvi Ca 2003_718Ron Royer -118 45. 36 15. 533 10 59 42 0.001 53 -36 -5 S 82% Bonny Doon CA -Bonny Doon Church -122 5. 37 5. 580 11 0 5 0.003 56 -38 -5 S 80% Tyrone NM - Gary Emerson -108 15. 32 45. 1745 10 58 32 0.004 44 -29 -5 S 80% TYRONE NM - G. Emerson -108 15. 32 45. 1745 10 58 32 0.004 44 -29 -6 S 77% APTOS CA R.NoltheniusCabrill -121 55. 36 55. 119 11 0 4 0.005 56 -38 -7 S 74% Hollistr CA David Baumgartner -121 25. 36 55. 0 11 0 0 0.005 55 -37 -11 S 62% SntaCruz CA Jon Merryman -121 55. 36 55. 0 11 0 4 0.008 56 -38 -11 S 60% Santa Cruz CA -122 5. 36 55. 6 11 0 4 0.008 56 -38 -13 S 52% Ft. Stockton, TX Richard Nugen -104 15. 30 55. 1373 10 58 6 0.009 40 -26 -13 - 50% *** Path limit *** -15 S 44% Springfi CA 99 3_3Billie Chandl -118 45. 36 5. 245 10 59 42 0.010 53 -36 -17 S 36% Juewa mo CA Walter Morgan -120 45. 36 35. 226 10 59 55 0.012 55 -37 -17 S 36% 10mi. s. Kent, T Richard Nugent -104 5. 30 55. 1455 10 58 6 0.012 40 -26 -17 S 34% Tulare CA TAA Ken Copeland -119 25. 36 15. 0 10 59 46 0.012 54 -36 -20 S 25% Fremont Pk Obs CA - Dave Samuels -121 25. 36 45. 823 11 0 0 0.014 55 -38 -20 S 25% Crps Christi TX - 97 25. 27 45. 11 10 57 25 0.014 34 -20 -21 S 19% G88 LAMP Observatory, New River -112 5. 33 55. 671 10 58 57 0.015 47 -31 -22 - 16% ** Path limit plus 1-Sigma ** -24 S 12% SantaCrz CA Chris Angelos -121 55. 36 45. 0 11 0 3 0.017 56 -38 -24 S 12% El Paso TX Charles R. Garbe -106 25. 31 45. 1166 10 58 19 0.017 42 -27 -25 S 9% Ridgcrst CA CARROLL L. EVANS JR -117 35. 35 35. 0 10 59 34 0.018 52 -35 -26 S 9% 253 Goldstone DSS 14, Fort Irwi -116 55. 35 25. 980 10 59 29 0.018 52 -35 -28 S 5% PHOENIX AZ MALEY~PAUL D. -111 55. 33 45. 659 10 58 55 0.020 47 -31 -29 S 5% GLOBE AZ RON ZIEGLER bad eml -110 45. 33 25. 100 10 58 48 0.020 46 -31 -30 S 4% El Paso TX -106 25. 31 45. 1125 10 58 20 0.021 42 -27 -30 S 4% 728 Corpus Christi - 97 25. 27 45. -23 10 57 25 0.021 34 -20 -31 - 2% ** Path limit plus 2-Sigma ** -32 S 2% Salinas, CA -121 35. 36 45. 0 11 0 1 0.023 55 -38 -35 S 1% SCOTTSDALE AZ - Tony George -111 55. 33 45. 727 10 58 55 0.024 47 -31 -36 S 1% CiudadJuarez MX -106 25. 31 45. 1125 10 58 20 0.025 42 -28 -37 S 1% 711 McDonald Observatory, Fort -104 5. 30 45. 2075 10 58 4 0.026 40 -26 -37 S 0% Marina CA John Mulshine -121 45. 36 45. 0 11 0 2 0.026 56 -38 -37 S 0% Pinnacls CA Nolthenius mobile -121 15. 36 35. 702 10 59 58 0.026 55 -37 -39 S 0% 678 Fountain Hills -111 45. 33 35. 652 10 58 54 0.027 47 -31 -39 - 0% ** Path limit plus 3-Sigma ** Prediction of 2023 Aug 26.9