RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star UC4-768-053139 with event index number of 166142

Geocentric closest approach at 2018/11/25 06:40:37 UTC

J2000 position of star is 19:56:22.7 +63:34:41
Equinox of date position of star is 19:56:35.3 +63:37:30
Stellar brightness R=15.1, use SENSEUP=128
Star is 92 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 12.1 AU from the Sun and 12.0 AU from the Earth.
The TNO is moving 35.6 km/sec on the sky relative to the star, or, 14.8 arcsec/hr.
The 1-sigma error in the time of the event is 27 seconds.
The 1-sigma cross-track error in the shadow position is 666 km.
The sky-plane scale is 8676.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.3 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2018/11/25 06:41UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.6 +45:20:55  1.3 19.37 104
Alderamin      21:19:01.7 +62:39:58  2.4  9.32  88
PPM 021877     19:58:42.6 +63:35:10  6.0  0.24  92
PPM 021868     19:58:09.7 +63:29:31  9.3  0.22  92
PPM 021858     19:56:52.8 +63:50:00 11.1  0.21  92
342842         19:56:36.4 +63:37:45 15.1        92
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 12.8 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Yuma 06:40:27 -74.4 Dark Up 20.6 333.6 Low 06:37:42 - 06:43:11 3951
Calipatria 06:40:28 -73.6 Dark Up 21.3 333.3 Low 06:37:44 - 06:43:13 3926
Blythe 06:40:25 -73.7 Dark Up 21.4 333.4 Low 06:37:40 - 06:43:09 3916
Parker 06:40:24 -73.5 Dark Up 21.8 333.4 Low 06:37:39 - 06:43:08 3897
Idyllwild 06:40:30 -72.5 Dark Up 22.3 332.9 Low 06:37:46 - 06:43:15 3890
Lake Havasu City 06:40:23 -73.2 Dark Up 22.1 333.3 Low 06:37:39 - 06:43:08 3883
DCO 06:40:20 -73.3 Dark Up 22.2 333.5 Low 06:37:35 - 06:43:04 3866
Mohave Valley 06:40:23 -72.8 Dark Up 22.6 333.2 Low 06:37:39 - 06:43:08 3864
Kingman/Dolan Springs 06:40:22 -72.8 Dark Up 22.7 333.3 Low 06:37:37 - 06:43:06 3856
Laughlin/Bullhead City 06:40:23 -72.5 Dark Up 22.8 333.1 Low 06:37:38 - 06:43:07 3852
Wildwood 06:40:34 -71.1 Dark Up 23.4 332.3 Low 06:37:49 - 06:43:18 3850
Patrick 06:40:21 -72.7 Dark Up 22.8 333.3 Low 06:37:36 - 06:43:05 3848
Searchlight/Boulder City 06:40:23 -72.1 Dark Up 23.2 333.0 Low 06:37:39 - 06:43:08 3837
Henderson 06:40:23 -71.6 Dark Up 23.7 332.9 Low 06:37:38 - 06:43:07 3811
Indian Springs 06:40:24 -70.9 Dark Up 24.5 332.6 Low 06:37:39 - 06:43:08 3781
CPSLO 06:40:37 -69.0 Dark Up 25.2 331.6 Low 06:37:52 - 06:43:21 3766
Beatty 06:40:25 -70.1 Dark Up 25.2 332.2 Low 06:37:41 - 06:43:10 3754
Lone Pine 06:40:29 -69.6 Dark Up 25.4 331.9 Low 06:37:45 - 06:43:14 3751
Bishop 06:40:29 -68.9 Dark Up 26.2 331.7 Low 06:37:44 - 06:43:13 3712
Tonopah 06:40:25 -69.0 Dark Up 26.4 331.8 Low 06:37:41 - 06:43:10 3696
Lee Vining 06:40:30 -68.1 Dark Up 27.0 331.3 Low 06:37:45 - 06:43:14 3675
Hawthorne 06:40:27 -67.9 Dark Up 27.3 331.3 Low 06:37:43 - 06:43:12 3655
Niwot 06:39:57 -70.6 Dark Up 24.0 335.0 Low 06:37:12 - 06:42:41 3635
Yerington 06:40:28 -67.3 Dark Up 27.9 331.1 Low 06:37:43 - 06:43:12 3624
Gardnerville 06:40:30 -67.0 Dark Up 28.1 330.9 Low 06:37:45 - 06:43:14 3618
Carson City 06:40:29 -66.8 Dark Up 28.3 330.8 Low 06:37:45 - 06:43:14 3605
Reno 06:40:29 -66.5 Dark Up 28.6 330.7 Low 06:37:44 - 06:43:13 3587
Portola 06:40:30 -66.0 Dark Up 29.1 330.5 Low 06:37:45 - 06:43:14 3564
Quincy 06:40:30 -65.7 Dark Up 29.4 330.3 Low 06:37:46 - 06:43:15 3549
Gimple 06:40:30 -65.5 Dark Up 29.5 330.3 Low 06:37:46 - 06:43:15 3540
Greenville 06:40:30 -65.5 Dark Up 29.6 330.3 Low 06:37:46 - 06:43:15 3539
Susanville 06:40:29 -65.4 Dark Up 29.7 330.3 Low 06:37:45 - 06:43:14 3530
Fall River/Burney 06:40:30 -64.6 Dark Up 30.5 329.9 Up 06:37:46 - 06:43:15 3485
Cedarville 06:40:27 -64.8 Dark Up 30.5 330.1 Up 06:37:42 - 06:43:11 3480
Lakeview 06:40:26 -64.2 Dark Up 31.1 329.8 Up 06:37:42 - 06:43:11 3443
Tulelake 06:40:29 -63.9 Dark Up 31.4 329.6 Up 06:37:44 - 06:43:13 3436
Klamath Falls 06:40:29 -63.5 Dark Up 31.7 329.4 Up 06:37:44 - 06:43:13 3416
Paisley 06:40:26 -63.8 Dark Up 31.6 329.6 Up 06:37:41 - 06:43:10 3412
Chiloquin 06:40:28 -63.2 Dark Up 32.0 329.3 Up 06:37:44 - 06:43:13 3397
North Lake 06:40:25 -63.2 Dark Up 32.3 329.3 Up 06:37:41 - 06:43:10 3376
La Pine/Gilchrist 06:40:26 -62.5 Dark Up 32.8 329.0 Up 06:37:42 - 06:43:11 3342
Oregon Observatory 06:40:26 -62.4 Dark Up 33.0 329.0 Up 06:37:41 - 06:43:10 3331
Bend 06:40:25 -62.3 Dark Up 33.1 329.0 Up 06:37:41 - 06:43:10 3323
Redmond 06:40:25 -62.2 Dark Up 33.2 328.9 Up 06:37:40 - 06:43:09 3313
Sisters 06:40:25 -62.0 Dark Up 33.4 328.8 Up 06:37:41 - 06:43:10 3305
Madras/Culver 06:40:24 -62.0 Dark Up 33.5 328.8 Up 06:37:39 - 06:43:08 3293
Maupin 06:40:23 -61.5 Dark Up 34.0 328.6 Up 06:37:38 - 06:43:07 3262
PNWRO 06:40:18 -61.7 Dark Up 33.9 329.0 Up 06:37:33 - 06:43:02 3245
George/Umatilla 06:40:19 -61.6 Dark Up 34.0 328.9 Up 06:37:34 - 06:43:03 3244
The Dalles 06:40:23 -61.2 Dark Up 34.4 328.5 Up 06:37:38 - 06:43:07 3235
Goldendale 06:40:22 -61.1 Dark Up 34.4 328.5 Up 06:37:37 - 06:43:06 3228
Pasco 06:40:18 -61.4 Dark Up 34.2 328.9 Up 06:37:33 - 06:43:02 3226
Toppenish/White Swan 06:40:20 -60.8 Dark Up 34.8 328.4 Up 06:37:35 - 06:43:04 3201
Yakima 06:40:20 -60.6 Dark Up 35.0 328.3 Up 06:37:35 - 06:43:04 3186
Ellensburg 06:40:19 -60.3 Dark Up 35.3 328.1 Up 06:37:35 - 06:43:04 3161
Wenatchee 06:40:18 -60.0 Dark Up 35.6 328.1 Up 06:37:34 - 06:43:03 3139
Entiat 06:40:18 -59.8 Dark Up 35.8 328.0 Up 06:37:33 - 06:43:02 3124
Manson/Chelan 06:40:17 -59.7 Dark Up 36.0 327.9 Up 06:37:33 - 06:43:02 3111
Brewster 06:40:17 -59.6 Dark Up 36.0 328.0 Up 06:37:32 - 06:43:01 3103
Okanogan 06:40:16 -59.5 Dark Up 36.2 327.9 Up 06:37:31 - 06:43:00 3089
Tonasket 06:40:15 -59.2 Dark Up 36.4 327.8 Up 06:37:31 - 06:43:00 3069
Oroville 06:40:15 -59.0 Dark Up 36.6 327.8 Up 06:37:31 - 06:43:00 3054

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 342842, (2018/11/25 06:41UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 19.37 104
Alderamin      21:18:35.2 +62:35:09  2.4  9.32  88
PPM 021877     19:58:28.6 +63:32:03  6.0  0.24  92
PPM 021868     19:57:55.6 +63:26:24  9.3  0.22  92
PPM 021858     19:56:39.5 +63:46:55 11.1  0.21  92
342842         19:56:22.7 +63:34:41 15.1        92
Positions are for J2000

Event circumstances last updated at 2017/05/19 18:06:25 UT

Marc W. Buie, Southwest Research Institute

RECON