RECON: TNO occultation with 175113

Event between (175113) 04PF115 and star GA0700:34788218 with event index number of 203715

Geocentric closest approach at 2019/08/01 07:53:04 UTC

J2000 position of star is 23:11:26.8 -19:35:26
Equinox of date position of star is 23:12:25.3 -19:29:25
Stellar brightness G=15.2, use SENSEUP=128
Star is 149 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 41.6 AU from the Sun and 40.7 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is 2355 km.
The sky-plane scale is 29540.7 km/arcsec.

The TNO has an absolute magnitude Hv=4.3
Diameter=831.8 km assuming a 5% albedo -- 40.1 sec chord
Diameter=339.6 km assuming a 30% albedo -- 16.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 175113, (2019/08/01 07:53UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.7 -29:31:05  1.2 10.51 151
88 Aqr         23:10:29.3 -21:03:57  3.7  1.65 149
PPM 241360     23:15:09.7 -19:35:20  7.8  0.64 148
PPM 241268     23:11:21.7 -19:21:22  9.8  0.29 149
175113         23:12:28.9 -19:29:03 15.2       148
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 11.6 km RECON observability=0.4 and success probability=2.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:52:26 -22.4 Dark Down 12.4 142.0 Really Low 07:39:52 - 08:05:00 3810
Manson/Chelan 07:52:33 -24.0 Dark Down 13.5 141.3 Really Low 07:39:59 - 08:05:07 3805
Entiat 07:52:33 -24.2 Dark Down 13.6 141.2 Really Low 07:39:59 - 08:05:07 3804
Wenatchee 07:52:36 -24.4 Dark Down 13.8 141.0 Really Low 07:40:02 - 08:05:10 3802
Oroville 07:52:27 -23.0 Dark Down 13.0 142.0 Really Low 07:39:53 - 08:05:01 3802
Ellensburg 07:52:37 -24.8 Dark Down 14.0 140.8 Really Low 07:40:03 - 08:05:11 3801
Brewster 07:52:31 -23.8 Dark Down 13.5 141.6 Really Low 07:39:57 - 08:05:05 3800
Tonasket 07:52:28 -23.2 Dark Down 13.2 142.0 Really Low 07:39:54 - 08:05:02 3800
Okanogan 07:52:29 -23.5 Dark Down 13.4 141.8 Really Low 07:39:55 - 08:05:03 3799
Yakima 07:52:38 -25.3 Dark Down 14.3 140.7 Really Low 07:40:04 - 08:05:12 3797
The Dalles 07:52:45 -26.2 Dark Down 14.8 140.0 Really Low 07:40:11 - 08:05:19 3794
Goldendale 07:52:41 -26.0 Dark Down 14.8 140.4 Really Low 07:40:07 - 08:05:15 3791
Toppenish/White Swan 07:52:38 -25.5 Dark Down 14.6 140.8 Really Low 07:40:04 - 08:05:12 3790
Maupin 07:52:45 -26.6 Dark Down 15.2 140.1 Really Low 07:40:11 - 08:05:19 3785
Sisters 07:52:50 -27.5 Dark Down 15.7 139.5 Really Low 07:40:16 - 08:05:24 3780
Madras/Culver 07:52:48 -27.2 Dark Down 15.6 139.9 Really Low 07:40:14 - 08:05:22 3777
Redmond 07:52:47 -27.5 Dark Down 15.9 139.8 Really Low 07:40:13 - 08:05:21 3772
Bend 07:52:49 -27.7 Dark Down 16.0 139.7 Really Low 07:40:15 - 08:05:23 3771
Oregon Observatory 07:52:50 -27.9 Dark Down 16.0 139.5 Really Low 07:40:16 - 08:05:24 3770
La Pine/Gilchrist 07:52:51 -28.1 Dark Down 16.2 139.4 Really Low 07:40:17 - 08:05:25 3768
Pasco 07:52:35 -25.6 Dark Down 15.2 141.9 Really Low 07:40:01 - 08:05:09 3764
George/Umatilla 07:52:38 -26.0 Dark Down 15.4 141.7 Really Low 07:40:04 - 08:05:12 3764
PNWRO 07:52:35 -25.9 Dark Down 15.5 142.1 Really Low 07:40:01 - 08:05:09 3756
Chiloquin 07:52:56 -29.2 Dark Down 16.9 138.9 Really Low 07:40:22 - 08:05:30 3753
North Lake 07:52:51 -28.6 Dark Down 16.8 139.9 Really Low 07:40:17 - 08:05:25 3748
Klamath Falls 07:52:57 -29.5 Dark Down 17.2 138.9 Really Low 07:40:23 - 08:05:31 3744
Tulelake 07:52:57 -29.8 Dark Down 17.5 139.1 Really Low 07:40:23 - 08:05:31 3733
Paisley 07:52:53 -29.1 Dark Down 17.4 140.1 Really Low 07:40:19 - 08:05:27 3730
Lakeview 07:52:53 -29.7 Dark Down 17.9 140.1 Really Low 07:40:19 - 08:05:27 3715
Fall River/Burney 07:53:01 -30.7 Dark Down 18.2 139.0 Really Low 07:40:27 - 08:05:35 3711
Cedarville 07:52:54 -30.3 Dark Down 18.5 140.2 Really Low 07:40:20 - 08:05:28 3697
Susanville 07:53:01 -31.4 Dark Down 19.1 139.5 Really Low 07:40:27 - 08:05:35 3680
Greenville 07:53:02 -31.7 Dark Down 19.2 139.2 Really Low 07:40:28 - 08:05:36 3680
Gimple 07:53:02 -31.7 Dark Down 19.2 139.3 Really Low 07:40:28 - 08:05:36 3678
Quincy 07:53:02 -31.9 Dark Down 19.3 139.2 Really Low 07:40:28 - 08:05:36 3675
Portola 07:53:02 -32.0 Dark Down 19.6 139.6 Really Low 07:40:28 - 08:05:36 3661
Reno 07:53:02 -32.3 Dark Down 20.2 140.0 Low 07:40:28 - 08:05:36 3641
Carson City 07:53:02 -32.7 Dark Down 20.5 140.0 Low 07:40:28 - 08:05:36 3630
Gardnerville 07:53:02 -32.9 Dark Down 20.7 140.0 Low 07:40:28 - 08:05:36 3623
Yerington 07:53:01 -32.9 Dark Down 20.9 140.5 Low 07:40:27 - 08:05:35 3611
Hawthorne 07:53:01 -33.4 Dark Down 21.5 140.8 Low 07:40:27 - 08:05:35 3586
Lee Vining 07:53:04 -33.9 Dark Down 21.7 140.3 Low 07:40:30 - 08:05:38 3581
Bishop 07:53:03 -34.6 Dark Down 22.6 140.7 Low 07:40:29 - 08:05:37 3546
Tonopah 07:52:58 -33.9 Dark Down 22.6 141.9 Low 07:40:24 - 08:05:32 3539
CPSLO 07:53:17 -36.5 Dark Down 23.0 138.3 Low 07:40:43 - 08:05:51 3530
Lone Pine 07:53:05 -35.3 Dark Down 23.3 140.8 Low 07:40:31 - 08:05:39 3514
Beatty 07:53:00 -35.0 Dark Down 23.7 142.0 Low 07:40:26 - 08:05:34 3492
Indian Springs 07:52:58 -35.4 Dark Down 24.5 142.9 Low 07:40:24 - 08:05:32 3454
Wildwood 07:53:15 -37.8 Dark Down 25.0 139.7 Low 07:40:41 - 08:05:49 3440
Henderson 07:52:57 -35.9 Dark Down 25.3 143.3 Low 07:40:23 - 08:05:31 3417
Searchlight/Boulder City 07:52:58 -36.5 Dark Down 25.8 143.2 Low 07:40:24 - 08:05:32 3396
Idyllwild 07:53:10 -38.2 Dark Down 26.3 141.2 Low 07:40:36 - 08:05:44 3379
Laughlin/Bullhead City 07:52:58 -36.7 Dark Down 26.2 143.5 Low 07:40:24 - 08:05:32 3376
Mohave Valley 07:52:59 -37.0 Dark Down 26.4 143.4 Low 07:40:25 - 08:05:33 3366
Patrick 07:52:55 -36.5 Dark Down 26.3 144.2 Low 07:40:21 - 08:05:29 3365
Kingman/Dolan Springs 07:52:57 -36.7 Dark Down 26.4 143.9 Low 07:40:23 - 08:05:31 3362
Lake Havasu City 07:53:01 -37.4 Dark Down 26.9 143.5 Low 07:40:27 - 08:05:35 3344
DCO 07:52:55 -36.7 Dark Down 26.9 144.7 Low 07:40:21 - 08:05:29 3334
Parker 07:53:02 -37.8 Dark Down 27.1 143.4 Low 07:40:28 - 08:05:36 3330
Calipatria 07:53:09 -38.8 Dark Down 27.4 142.0 Low 07:40:35 - 08:05:43 3324
Blythe 07:53:04 -38.3 Dark Down 27.4 143.0 Low 07:40:30 - 08:05:38 3318
Yuma 07:53:08 -39.2 Dark Down 28.2 142.7 Low 07:40:34 - 08:05:42 3282
Niwot 07:52:12 -30.9 Dark Down 25.8 153.4 Low 07:39:38 - 08:04:46 3259

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 175113, (2019/08/01 07:53UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 10.51 151
88 Aqr         23:09:26.9 -21:10:20  3.7  1.65 149
PPM 241360     23:14:07.6 -19:41:45  7.8  0.64 148
PPM 241268     23:10:19.5 -19:27:45  9.8  0.29 149
175113         23:11:26.8 -19:35:26 15.2       149
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:26:06 UT

Marc W. Buie, Southwest Research Institute

RECON