RECON: TNO occultation with 449097

Event between (449097) 12UT68 and star TYC22449-00679-1 with event index number of 241265

Geocentric closest approach at 2020/01/15 09:49:09 UTC

J2000 position of star is 06:59:27.2 +37:05:53
Equinox of date position of star is 07:00:40.3 +37:04:20
Stellar brightness V=7.9, use SENSEUP=2
Star is 74 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 14.2 AU from the Sun and 13.3 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 7.8 arcsec/hr.
The 1-sigma error in the time of the event is 90 seconds.
The 1-sigma cross-track error in the shadow position is 516 km.
The sky-plane scale is 9643.3 km/arcsec.

The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 3.5 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 449097, (2020/01/15 09:49UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.5 +27:58:34  1.1 13.23  63
62 Aur         07:00:24.6 +38:01:23  6.0  0.96  74
PPM 072284     06:59:41.3 +36:50:55  8.5  0.31  74
PPM 072329     07:02:08.0 +37:05:56  8.6  0.27  73
449097         07:00:48.4 +37:04:09  7.9        73
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 5.0 sigma about the mid-time.
The median site spacing is 21.4 km RECON observability=1.0 and success probability=23.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:47:18 -55.8 Dark Up 60.9 259.9 Up 09:39:16 - 09:55:20 1930
Tonasket 09:47:17 -56.0 Dark Up 61.0 260.3 Up 09:39:15 - 09:55:19 1908
Okanogan 09:47:16 -56.3 Dark Up 61.1 260.8 Up 09:39:14 - 09:55:18 1871
Brewster 09:47:16 -56.6 Dark Up 61.3 261.1 Up 09:39:14 - 09:55:18 1839
Manson/Chelan 09:47:17 -56.9 Dark Up 61.6 261.1 Up 09:39:15 - 09:55:19 1808
Entiat 09:47:16 -57.1 Dark Up 61.7 261.5 Up 09:39:14 - 09:55:18 1785
Wenatchee 09:47:16 -57.3 Dark Up 61.8 261.8 Up 09:39:14 - 09:55:18 1757
Ellensburg 09:47:15 -57.7 Dark Up 62.0 262.4 Up 09:39:13 - 09:55:17 1710
Pasco 09:47:10 -57.5 Dark Up 61.1 265.0 Up 09:39:08 - 09:55:12 1685
Yakima 09:47:14 -58.0 Dark Up 62.0 263.1 Up 09:39:12 - 09:55:16 1671
PNWRO 09:47:08 -57.6 Dark Up 61.0 265.6 Up 09:39:06 - 09:55:10 1669
Toppenish/White Swan 09:47:14 -58.1 Dark Up 62.0 263.7 Up 09:39:12 - 09:55:16 1655
Niwot 09:46:15 -51.8 Dark Up 50.7 282.5 Up 09:38:13 - 09:54:17 1650
George/Umatilla 09:47:09 -57.9 Dark Up 61.3 265.4 Up 09:39:07 - 09:55:11 1646
Goldendale 09:47:13 -58.7 Dark Up 62.3 264.4 Up 09:39:11 - 09:55:15 1588
The Dalles 09:47:14 -59.0 Dark Up 62.6 264.5 Up 09:39:12 - 09:55:16 1555
Maupin 09:47:12 -59.3 Dark Up 62.5 265.4 Up 09:39:10 - 09:55:14 1517
Madras/Culver 09:47:11 -59.6 Dark Up 62.6 266.4 Up 09:39:09 - 09:55:13 1463
Redmond 09:47:10 -59.9 Dark Up 62.7 267.0 Up 09:39:08 - 09:55:12 1426
Sisters 09:47:11 -60.1 Dark Up 63.0 266.7 Up 09:39:09 - 09:55:13 1415
Bend 09:47:10 -60.1 Dark Up 62.8 267.3 Up 09:39:08 - 09:55:12 1400
Oregon Observatory 09:47:10 -60.3 Dark Up 62.9 267.6 Up 09:39:08 - 09:55:12 1379
La Pine/Gilchrist 09:47:10 -60.5 Dark Up 62.9 267.9 Up 09:39:08 - 09:55:12 1357
North Lake 09:47:07 -60.5 Dark Up 62.5 269.2 Up 09:39:05 - 09:55:09 1334
Paisley 09:47:04 -60.6 Dark Up 62.3 270.5 Up 09:39:02 - 09:55:06 1292
Lakeview 09:47:03 -60.8 Dark Up 62.1 271.6 Up 09:39:01 - 09:55:05 1249
Chiloquin 09:47:08 -61.4 Dark Up 63.2 269.9 Up 09:39:06 - 09:55:10 1235
Klamath Falls 09:47:07 -61.6 Dark Up 63.2 270.6 Up 09:39:05 - 09:55:09 1204
Cedarville 09:47:00 -61.1 Dark Up 62.0 272.9 Up 09:38:58 - 09:55:02 1190
Tulelake 09:47:06 -61.6 Dark Up 62.9 271.3 Up 09:39:04 - 09:55:08 1188
Fall River/Burney 09:47:03 -62.2 Dark Up 62.9 273.1 Up 09:39:01 - 09:55:05 1100
Susanville 09:47:00 -62.1 Dark Up 62.3 274.7 Up 09:38:58 - 09:55:02 1064
Gimple 09:47:00 -62.4 Dark Up 62.4 275.2 Up 09:38:58 - 09:55:02 1029
Greenville 09:47:00 -62.5 Dark Up 62.5 275.1 Up 09:38:58 - 09:55:02 1026
Portola 09:46:57 -62.4 Dark Up 62.1 276.0 Up 09:38:55 - 09:54:59 1010
Reno 09:46:55 -62.1 Dark Up 61.6 276.8 Up 09:38:53 - 09:54:57 1007
Quincy 09:46:59 -62.6 Dark Up 62.4 275.5 Up 09:38:57 - 09:55:01 1006
Yerington 09:46:51 -62.0 Dark Up 61.0 278.1 Up 09:38:49 - 09:54:53 976
Carson City 09:46:54 -62.3 Dark Up 61.5 277.4 Up 09:38:52 - 09:54:56 972
Tonopah 09:46:43 -61.2 Dark Up 59.4 280.4 Up 09:38:41 - 09:54:45 958
Hawthorne 09:46:49 -61.9 Dark Up 60.5 279.1 Up 09:38:47 - 09:54:51 950
Gardnerville 09:46:53 -62.4 Dark Up 61.4 277.9 Up 09:38:51 - 09:54:55 950
Lee Vining 09:46:49 -62.5 Dark Up 60.8 279.9 Up 09:38:47 - 09:54:51 876
Indian Springs 09:46:35 -60.7 Dark Up 57.9 283.3 Up 09:38:33 - 09:54:37 873
Beatty 09:46:39 -61.4 Dark Up 58.8 282.5 Up 09:38:37 - 09:54:41 862
Henderson 09:46:31 -60.4 Dark Up 57.2 284.4 Up 09:38:29 - 09:54:33 849
Bishop 09:46:45 -62.3 Dark Up 60.1 281.2 Up 09:38:43 - 09:54:47 844
DCO 09:46:24 -59.4 Dark Up 55.6 286.2 Up 09:38:22 - 09:54:26 834
Patrick 09:46:27 -59.8 Dark Up 56.2 285.6 Up 09:38:25 - 09:54:29 834
Kingman/Dolan Springs 09:46:27 -60.0 Dark Up 56.3 285.8 Up 09:38:25 - 09:54:29 805
Searchlight/Boulder City 09:46:30 -60.6 Dark Up 57.0 285.2 Up 09:38:28 - 09:54:32 795
Lone Pine 09:46:42 -62.4 Dark Up 59.7 282.6 Up 09:38:40 - 09:54:44 782
Laughlin/Bullhead City 09:46:28 -60.4 Dark Up 56.7 285.7 Up 09:38:26 - 09:54:30 781
Mohave Valley 09:46:27 -60.5 Dark Up 56.6 286.1 Up 09:38:25 - 09:54:29 754
Lake Havasu City 09:46:26 -60.5 Dark Up 56.3 286.8 Up 09:38:24 - 09:54:28 726
Parker 09:46:25 -60.6 Dark Up 56.2 287.3 Up 09:38:23 - 09:54:27 693
Blythe 09:46:24 -61.0 Dark Up 56.3 288.0 Up 09:38:22 - 09:54:26 629
CPSLO 09:46:48 -64.9 Dark Up 61.5 284.2 Up 09:38:46 - 09:54:50 553
Idyllwild 09:46:31 -62.6 Dark Up 58.0 287.5 Up 09:38:29 - 09:54:33 552
Calipatria 09:46:26 -61.9 Dark Up 56.8 288.5 Up 09:38:24 - 09:54:28 541
Yuma 09:46:23 -61.3 Dark Up 56.0 289.3 Up 09:38:21 - 09:54:25 536
Wildwood 09:46:38 -63.9 Dark Up 59.5 286.6 Up 09:38:36 - 09:54:40 511

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 449097, (2020/01/15 09:49UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 13.23  63
62 Aur         06:59:02.8 +38:03:06  6.0  0.96  74
PPM 072284     06:58:20.2 +36:52:38  8.5  0.31  74
PPM 072329     07:00:46.8 +37:07:42  8.6  0.27  73
449097         06:59:27.2 +37:05:53  7.9        73
Positions are for J2000

Event circumstances last updated at 2018/01/16 17:10:53 UT

Marc W. Buie, Southwest Research Institute

RECON