RECON: TNO occultation with 01KD77

Event between 01KD77 and star UC4-342-163306 with event index number of 207722

Geocentric closest approach at 2019/08/16 06:42:31 UTC

J2000 position of star is 18:43:27.7 -21:38:40
Equinox of date position of star is 18:44:32.2 -21:37:32
Stellar brightness R=16.1, use SENSEUP=128
Star is 52 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 36.5 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 16.3 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 550 seconds.
The 1-sigma cross-track error in the shadow position is 1849 km.
The sky-plane scale is 25936.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 28.4 sec chord
Diameter=188.3 km assuming a 30% albedo -- 11.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2019/08/16 06:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.8 -26:28:26  0.9 30.89  81
Nunki          18:56:28.8 -26:16:14  2.0  5.38  49
28 Sgr         18:47:31.6 -22:22:12  4.9  1.00  51
PPM 268766     18:43:09.7 -21:18:09  8.5  0.47  52
PPM 268804     18:44:32.6 -21:17:56  8.9  0.33  52
01KD77         18:44:38.2 -21:37:25 16.1        51
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 1.6 sigma about the mid-time.
The median site spacing is 16.2 km RECON observability=0.7 and success probability=3.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:40:07 -24.7 Dark Up 16.2 203.3 Really Low 06:25:07 - 06:55:07 4814
Tonasket 06:40:07 -24.9 Dark Up 16.4 203.3 Really Low 06:25:07 - 06:55:07 4804
Okanogan 06:40:07 -25.2 Dark Up 16.8 203.2 Really Low 06:25:07 - 06:55:07 4792
Brewster 06:40:07 -25.4 Dark Up 17.1 203.1 Really Low 06:25:07 - 06:55:07 4784
Manson/Chelan 06:40:08 -25.5 Dark Up 17.4 202.7 Really Low 06:25:08 - 06:55:08 4781
Entiat 06:40:08 -25.7 Dark Up 17.6 202.7 Really Low 06:25:08 - 06:55:08 4773
Wenatchee 06:40:08 -25.9 Dark Up 17.9 202.6 Really Low 06:25:08 - 06:55:08 4763
Ellensburg 06:40:09 -26.2 Dark Up 18.3 202.5 Really Low 06:25:09 - 06:55:09 4748
Yakima 06:40:08 -26.6 Dark Up 18.7 202.5 Really Low 06:25:08 - 06:55:08 4730
Toppenish/White Swan 06:40:07 -26.8 Dark Up 18.8 202.7 Really Low 06:25:07 - 06:55:07 4716
Goldendale 06:40:08 -27.2 Dark Up 19.4 202.4 Really Low 06:25:08 - 06:55:08 4698
The Dalles 06:40:09 -27.3 Dark Up 19.8 202.1 Really Low 06:25:09 - 06:55:09 4694
Pasco 06:40:02 -27.2 Dark Up 18.6 203.9 Really Low 06:25:02 - 06:55:02 4686
George/Umatilla 06:40:02 -27.5 Dark Up 19.0 203.7 Really Low 06:25:02 - 06:55:02 4674
Maupin 06:40:08 -27.7 Dark Up 20.1 202.2 Low 06:25:08 - 06:55:08 4672
PNWRO 06:40:00 -27.5 Dark Up 18.8 204.1 Really Low 06:25:00 - 06:55:00 4670
Madras/Culver 06:40:07 -28.2 Dark Up 20.6 202.3 Low 06:25:07 - 06:55:07 4646
Sisters 06:40:09 -28.4 Dark Up 21.1 201.9 Low 06:25:09 - 06:55:09 4638
Redmond 06:40:07 -28.5 Dark Up 21.0 202.3 Low 06:25:07 - 06:55:07 4629
Bend 06:40:07 -28.6 Dark Up 21.2 202.2 Low 06:25:07 - 06:55:07 4621
Oregon Observatory 06:40:08 -28.8 Dark Up 21.4 202.1 Low 06:25:08 - 06:55:08 4614
La Pine/Gilchrist 06:40:08 -28.9 Dark Up 21.6 202.0 Low 06:25:08 - 06:55:08 4605
North Lake 06:40:04 -29.5 Dark Up 21.9 202.7 Low 06:25:04 - 06:55:04 4571
Chiloquin 06:40:08 -29.8 Dark Up 22.7 201.9 Low 06:25:08 - 06:55:08 4554
Paisley 06:40:02 -30.1 Dark Up 22.3 203.1 Low 06:25:02 - 06:55:02 4534
Klamath Falls 06:40:07 -30.2 Dark Up 23.0 202.0 Low 06:25:07 - 06:55:07 4534
Tulelake 06:40:05 -30.5 Dark Up 23.2 202.3 Low 06:25:05 - 06:55:05 4514
Lakeview 06:40:02 -30.6 Dark Up 22.7 203.3 Low 06:25:02 - 06:55:02 4503
Cedarville 06:39:59 -31.3 Dark Up 23.2 203.6 Low 06:24:59 - 06:54:59 4464
Fall River/Burney 06:40:04 -31.3 Dark Up 24.0 202.5 Low 06:25:04 - 06:55:04 4462
Susanville 06:39:59 -32.1 Dark Up 24.4 203.4 Low 06:24:59 - 06:54:59 4411
Greenville 06:40:02 -32.3 Dark Up 24.7 203.1 Low 06:25:02 - 06:55:02 4402
Gimple 06:40:00 -32.3 Dark Up 24.7 203.2 Low 06:25:00 - 06:55:00 4400
Quincy 06:40:00 -32.5 Dark Up 24.9 203.2 Low 06:25:00 - 06:55:00 4390
Portola 06:39:58 -32.7 Dark Up 24.9 203.6 Low 06:24:58 - 06:54:58 4373
Reno 06:39:55 -33.2 Dark Up 24.9 204.3 Low 06:24:55 - 06:54:55 4344
Carson City 06:39:54 -33.5 Dark Up 25.3 204.4 Low 06:24:54 - 06:54:54 4322
Gardnerville 06:39:53 -33.8 Dark Up 25.5 204.5 Low 06:24:53 - 06:54:53 4307
Yerington 06:39:51 -33.9 Dark Up 25.2 205.0 Low 06:24:51 - 06:54:51 4297
Hawthorne 06:39:48 -34.5 Dark Up 25.5 205.6 Low 06:24:48 - 06:54:48 4257
Lee Vining 06:39:50 -34.9 Dark Up 26.2 205.3 Low 06:24:50 - 06:54:50 4234
Tonopah 06:39:40 -35.3 Dark Up 25.4 207.0 Low 06:24:40 - 06:54:40 4197
Bishop 06:39:45 -35.6 Dark Up 26.4 206.1 Low 06:24:45 - 06:54:45 4181
Lone Pine 06:39:43 -36.4 Dark Up 27.0 206.6 Low 06:24:43 - 06:54:43 4125
Beatty 06:39:37 -36.5 Dark Up 26.3 207.7 Low 06:24:37 - 06:54:37 4114
CPSLO 06:39:55 -36.7 Dark Up 29.1 204.4 Low 06:24:55 - 06:54:55 4101
Indian Springs 06:39:31 -37.2 Dark Up 26.2 208.8 Low 06:24:31 - 06:54:31 4068
Niwot 06:38:53 -35.7 Dark Up 18.8 217.3 Really Low 06:23:53 - 06:53:53 4025
Henderson 06:39:27 -37.9 Dark Up 26.4 209.6 Low 06:24:27 - 06:54:27 4016
Searchlight/Boulder City 06:39:27 -38.4 Dark Up 26.8 209.8 Low 06:24:27 - 06:54:27 3977
Wildwood 06:39:43 -38.5 Dark Up 29.5 206.6 Low 06:24:43 - 06:54:43 3974
Laughlin/Bullhead City 06:39:24 -38.8 Dark Up 27.0 210.1 Low 06:24:24 - 06:54:24 3949
Patrick 06:39:22 -38.7 Dark Up 26.5 210.7 Low 06:24:22 - 06:54:22 3947
Kingman/Dolan Springs 06:39:22 -38.9 Dark Up 26.7 210.6 Low 06:24:22 - 06:54:22 3937
Mohave Valley 06:39:25 -39.0 Dark Up 27.2 210.2 Low 06:24:25 - 06:54:25 3930
DCO 06:39:17 -39.2 Dark Up 26.4 211.5 Low 06:24:17 - 06:54:17 3909
Idyllwild 06:39:32 -39.5 Dark Up 29.1 208.5 Low 06:24:32 - 06:54:32 3905
Lake Havasu City 06:39:23 -39.5 Dark Up 27.4 210.6 Low 06:24:23 - 06:54:23 3897
Parker 06:39:22 -39.8 Dark Up 27.7 210.7 Low 06:24:22 - 06:54:22 3873
Blythe 06:39:23 -40.2 Dark Up 28.3 210.5 Low 06:24:23 - 06:54:23 3844
Calipatria 06:39:26 -40.4 Dark Up 29.1 209.8 Low 06:24:26 - 06:54:26 3834
Yuma 06:39:22 -41.1 Dark Up 29.1 210.8 Low 06:24:22 - 06:54:22 3781

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 01KD77, (2019/08/16 06:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.89  81
Nunki          18:55:15.9 -26:17:49  2.0  5.38  49
28 Sgr         18:46:20.7 -22:23:32  4.9  1.00  51
PPM 268766     18:41:59.3 -21:19:21  8.5  0.47  52
PPM 268804     18:43:22.3 -21:19:11  8.9  0.33  52
01KD77         18:43:27.7 -21:38:40 16.1        52
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:12:31 UT

Marc W. Buie, Southwest Research Institute

RECON