IOTA/IOTA-ES occultation update for (559) Nanon / TYC 1383-01250-1 event on 2024 Oct 07, 21:33 UT Visible from Summary ------- On 2024 Oct 07 UT, the 69.76 km diameter asteroid (559) Nanon will occult a 11.6 mag star in the constellation Cancer for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.70 mag to 15.25 mag (the magnitude of the asteroid) for at most 2.710 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 100 * date and approx. time of event: 2024 Oct 07, 21:29 - 2024 Oct 07, 21:37 * geocentric midpoint of event [JD]: 2460591.39824833 * magnitude of target star: 11.59 * magnitude drop [mag]: 3.70 * estimated maximum duration [s]: 2.710 * Moon: 22 % sunlit, 126° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 70 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.001", 93°) * approx speed of asteroid's shadow [km/s]: 25.7818 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1383-01250-1 by 559 Nanon on 2024 Oct 7 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 54 0 0 9 43 1 21 29 21.4 0 72 -70 .. .. .. 10 2 58 .. .. .. 10 4 22 .... 55 0 0 10 2 40 21 29 21.5 1 72 -69 9 42 44 10 22 36 9 41 21 10 24 0 -0.13 56 0 0 10 22 9 21 29 21.6 2 72 -68 10 2 14 10 42 4 10 0 50 10 43 28 -0.08 57 0 0 10 41 27 21 29 21.8 3 72 -67 10 21 33 11 1 21 10 20 9 11 2 44 -0.06 58 0 0 11 0 33 21 29 22.1 4 72 -66 10 40 40 11 20 26 10 39 16 11 21 49 -0.06 59 0 0 11 19 27 21 29 22.5 5 73 -65 10 59 35 11 39 19 10 58 12 11 40 42 -0.05 60 0 0 11 38 9 21 29 22.9 6 73 -64 11 18 19 11 58 0 11 16 55 11 59 23 -0.05 61 0 0 11 56 39 21 29 23.4 7 73 -63 11 36 49 12 16 28 11 35 26 12 17 52 -0.05 62 0 0 12 14 55 21 29 24.0 8 73 -62 11 55 7 12 34 44 11 53 44 12 36 7 -0.04 63 0 0 12 32 59 21 29 24.7 9 73 -61 12 13 12 12 52 46 12 11 48 12 54 9 -0.04 64 0 0 12 50 49 21 29 25.5 10 74 -60 12 31 3 13 10 35 12 29 40 13 11 58 -0.04 65 0 0 13 8 25 21 29 26.3 11 74 -59 12 48 40 13 28 10 12 47 17 13 29 33 -0.04 66 0 0 13 25 46 21 29 27.2 12 74 -58 13 6 3 13 45 30 13 4 40 13 46 53 -0.04 67 0 0 13 42 54 21 29 28.2 13 74 -57 13 23 11 14 2 36 13 21 48 14 3 59 -0.04 68 0 0 13 59 46 21 29 29.2 14 75 -56 13 40 5 14 19 27 13 38 42 14 20 50 -0.04 69 0 0 14 16 23 21 29 30.4 15 75 -55 13 56 44 14 36 3 13 55 21 14 37 26 -0.04 70 0 0 14 32 46 21 29 31.6 16 75 -54 14 13 7 14 52 24 14 11 44 14 53 47 -0.04 71 0 0 14 48 52 21 29 32.8 17 75 -53 14 29 15 15 8 29 14 27 52 15 9 52 -0.04 72 0 0 15 4 43 21 29 34.2 18 76 -52 14 45 7 15 24 19 14 43 44 15 25 41 -0.04 73 0 0 15 20 17 21 29 35.6 19 76 -51 15 0 42 15 39 52 14 59 20 15 41 14 -0.04 74 0 0 15 35 35 21 29 37.1 20 76 -50 15 16 2 15 55 9 15 14 40 15 56 31 -0.04 75 0 0 15 50 37 21 29 38.6 21 76 -49 15 31 5 16 10 9 15 29 43 16 11 31 -0.04 76 0 0 16 5 22 21 29 40.2 22 77 -48 15 45 51 16 24 53 15 44 29 16 26 15 -0.04 77 0 0 16 19 49 21 29 41.9 23 77 -47 16 0 20 16 39 19 15 58 58 16 40 41 -0.04 78 0 0 16 34 0 21 29 43.6 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34 10 - 5 54 16 - 6 35 34 - 5 52 52 -0.17 -127 0 0 .. .. .... .. .. .. .. .. .. .. .. .. - 6 14 6 .. .. .. - 6 12 42 .... Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1383-01250-1 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 24 40.1963 DE: +18 09 43.229 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 24 40.1965 DE: +18 09 43.228 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.6 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (559) Nanon asteroid class: approx. diameter [km]: 70 approx. diameter ["]: 0.032 distance from Earth [AU]: 3.01220 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#124 date of fit: 2023 Apr 27 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.008", 0.001", 93.401° remarks: * orbital elements for (559)Nanon : Mean anomaly = 226.1279129972 deg Arg. of pericenter = 131.8322820887 deg Long. of node = 111.8476537752 deg Inclination = 9.3112761909 deg Eccentricity = 0.0661621821 Semimajor axis = 2.7119741777 AU Perihelion dist = 2.5325440482 AU Mag: H = 9.61, G = 0.15 Epoch of elements : MJD 60590.89824796 TDT (2024 Oct 07.8982) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1242023Apr27,2.71,2024,10,7,21.557960,0.004108,0.028517,14.392014,-2.151512,-0.005323,0.001262,-0.000001,0.000000 146.1311,18.0831,-146.47,-5.95,False TYC 1383-01250-1,8.41116562,18.1620082,11.96,11.59,11.39,0.0,0,,8.43460461,18.0831162,3.70,3.46,0,0,0 559,Nanon,15.25,69.760,3.0122,0,0,2.947,-6.29,,4.0,0 0,225.9297,2024,10,7,131.8323,111.8477,9.3113,0.06616,2.71197,2.53254,9.61,5.0,0.15 1.035,0.0080,0.0009,93,0.0011,Known errors,0.97,0,-1,-1 20241007_1250-1,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org