RECON: TNO occultation with 04HX78

Event between 04HX78 and star GA0740:08166164 with event index number of 189851

Geocentric closest approach at 2019/06/01 06:35:57 UTC

J2000 position of star is 17:26:48.2 -14:00:56
Equinox of date position of star is 17:27:52.1 -14:01:50
Stellar brightness G=11.4, use SENSEUP=8
Star is 142 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 33.5 AU from the Sun and 32.6 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 411 seconds.
The 1-sigma cross-track error in the shadow position is 2654 km.
The sky-plane scale is 23610.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=143.9 km assuming a 5% albedo -- 6.1 sec chord
Diameter=58.7 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04HX78, (2019/06/01 06:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.1 -26:28:24  0.9 18.29 153
35Eta Oph      17:11:29.6 -15:44:52  2.6  4.32 146
53Nu Ser       17:21:55.2 -12:51:54  4.0  1.86 143
PPM 233132     17:30:13.5 -14:05:42  8.2  0.57 142
PPM 233094     17:28:30.6 -14:03:02  9.4  0.15 142
04HX78         17:27:54.4 -14:01:51 11.4       142
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 2.2 sigma about the mid-time.
The median site spacing is 14.9 km RECON observability=1.0 and success probability=6.9%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Rutland	06:38:06	-16.1	AT	Down	20.1	146.7	Low	06:23:06 - 06:53:06	4454
Penticton	06:38:06	-16.4	AT	Down	20.4	146.5	Low	06:23:06 - 06:53:06	4429
Okanagan Falls	06:38:07	-16.6	AT	Down	20.5	146.4	Low	06:23:07 - 06:53:07	4418
Southern Okanagan	06:38:07	-16.7	AT	Down	20.7	146.4	Low	06:23:07 - 06:53:07	4408
Oroville	06:38:07	-17.0	AT	Down	20.9	146.5	Low	06:23:07 - 06:53:07	4396
Tonasket	06:38:08	-17.2	AT	Down	21.1	146.4	Low	06:23:08 - 06:53:08	4382
Okanogan	06:38:09	-17.5	AT	Down	21.3	146.2	Low	06:23:09 - 06:53:09	4359
Brewster	06:38:10	-17.7	AT	Down	21.5	145.9	Low	06:23:10 - 06:53:10	4338
Manson/Chelan	06:38:11	-17.8	AT	Down	21.5	145.5	Low	06:23:11 - 06:53:11	4318
Entiat	06:38:11	-18.0	Dark	Down	21.7	145.4	Low	06:23:11 - 06:53:11	4303
Wenatchee	06:38:12	-18.2	Dark	Down	21.9	145.3	Low	06:23:12 - 06:53:12	4286
Ellensburg	06:38:13	-18.6	Dark	Down	22.1	145.0	Low	06:23:13 - 06:53:13	4255
Pasco	06:38:10	-19.6	Dark	Down	23.3	146.2	Low	06:23:10 - 06:53:10	4236
Yakima	06:38:14	-18.9	Dark	Down	22.4	144.9	Low	06:23:14 - 06:53:14	4229
PNWRO	06:38:11	-19.9	Dark	Down	23.6	146.3	Low	06:23:11 - 06:53:11	4225
Toppenish/White Swan	06:38:13	-19.2	Dark	Down	22.7	145.0	Low	06:23:13 - 06:53:13	4219
George/Umatilla	06:38:11	-19.9	Dark	Down	23.5	145.9	Low	06:23:11 - 06:53:11	4210
Goldendale	06:38:16	-19.6	Dark	Down	23.0	144.4	Low	06:23:16 - 06:53:16	4174
The Dalles	06:38:17	-19.7	Dark	Down	23.0	144.0	Low	06:23:17 - 06:53:17	4152
Maupin	06:38:17	-20.1	Dark	Down	23.4	144.0	Low	06:23:17 - 06:53:17	4127
Niwot	06:37:34	-27.7	Dark	Down	33.3	159.0	Up	06:22:34 - 06:52:34	4098
Madras/Culver	06:38:18	-20.6	Dark	Down	23.8	143.9	Low	06:23:18 - 06:53:18	4090
Redmond	06:38:19	-21.0	Dark	Down	24.1	143.7	Low	06:23:19 - 06:53:19	4065
Sisters	06:38:20	-20.8	Dark	Down	23.9	143.4	Low	06:23:20 - 06:53:20	4058
Bend	06:38:19	-21.1	Dark	Down	24.2	143.5	Low	06:23:19 - 06:53:19	4047
Oregon Observatory	06:38:20	-21.3	Dark	Down	24.3	143.4	Low	06:23:20 - 06:53:20	4033
La Pine/Gilchrist	06:38:20	-21.4	Dark	Down	24.4	143.3	Low	06:23:20 - 06:53:20	4018
North Lake	06:38:20	-22.0	Dark	Down	25.0	143.7	Low	06:23:20 - 06:53:20	4000
Paisley	06:38:19	-22.6	Dark	Down	25.6	143.9	Low	06:23:19 - 06:53:19	3970
Lakeview	06:38:20	-23.1	Dark	Down	26.1	143.9	Low	06:23:20 - 06:53:20	3939
Chiloquin	06:38:23	-22.4	Dark	Down	25.2	142.6	Low	06:23:23 - 06:53:23	3933
Klamath Falls	06:38:23	-22.7	Dark	Down	25.5	142.6	Low	06:23:23 - 06:53:23	3911
Tulelake	06:38:23	-23.1	Dark	Down	25.8	142.8	Low	06:23:23 - 06:53:23	3898
Cedarville	06:38:20	-23.8	Dark	Down	26.7	143.9	Low	06:23:20 - 06:53:20	3896
Fall River/Burney	06:38:24	-23.9	Dark	Down	26.6	142.6	Low	06:23:24 - 06:53:24	3835
Susanville	06:38:23	-24.7	Dark	Down	27.4	143.1	Low	06:23:23 - 06:53:23	3805
Gimple	06:38:23	-24.9	Dark	Down	27.5	142.8	Low	06:23:23 - 06:53:23	3781
Greenville	06:38:24	-24.9	Dark	Down	27.5	142.8	Low	06:23:24 - 06:53:24	3779
Portola	06:38:23	-25.3	Dark	Down	28.0	143.1	Low	06:23:23 - 06:53:23	3765
Quincy	06:38:24	-25.1	Dark	Down	27.7	142.7	Low	06:23:24 - 06:53:24	3764
Reno	06:38:21	-25.8	Dark	Down	28.5	143.7	Low	06:23:21 - 06:53:21	3760
Carson City	06:38:21	-26.1	Dark	Down	28.8	143.6	Low	06:23:21 - 06:53:21	3734
Yerington	06:38:20	-26.4	Dark	Down	29.2	144.1	Low	06:23:20 - 06:53:20	3734
Gardnerville	06:38:21	-26.3	Dark	Down	29.0	143.5	Low	06:23:21 - 06:53:21	3717
Hawthorne	06:38:19	-27.0	Dark	Down	29.9	144.5	Low	06:23:19 - 06:53:19	3711
Tonopah	06:38:15	-27.8	Dark	Down	30.9	145.7	Up	06:23:15 - 06:53:15	3707
Lee Vining	06:38:21	-27.4	Dark	Down	30.1	143.8	Up	06:23:21 - 06:53:21	3658
Beatty	06:38:14	-29.0	Dark	Down	32.0	145.8	Up	06:23:14 - 06:53:14	3630
Indian Springs	06:38:11	-29.6	Dark	Down	32.8	146.8	Up	06:23:11 - 06:53:11	3629
Bishop	06:38:20	-28.2	Dark	Down	30.9	144.3	Up	06:23:20 - 06:53:20	3628
Henderson	06:38:10	-30.3	Dark	Down	33.5	147.3	Up	06:23:10 - 06:53:10	3603
Patrick	06:38:06	-31.1	Dark	Down	34.5	148.2	Up	06:23:06 - 06:53:06	3579
Lone Pine	06:38:19	-29.0	Dark	Down	31.7	144.4	Up	06:23:19 - 06:53:19	3578
DCO	06:38:04	-31.5	Dark	Down	35.1	148.8	Up	06:23:04 - 06:53:04	3571
Searchlight/Boulder City	06:38:10	-30.8	Dark	Down	34.0	147.1	Up	06:23:10 - 06:53:10	3560
Kingman/Dolan Springs	06:38:07	-31.3	Dark	Down	34.6	147.9	Up	06:23:07 - 06:53:07	3558
Laughlin/Bullhead City	06:38:09	-31.2	Dark	Down	34.4	147.4	Up	06:23:09 - 06:53:09	3545
Mohave Valley	06:38:09	-31.5	Dark	Down	34.7	147.3	Up	06:23:09 - 06:53:09	3523
Lake Havasu City	06:38:09	-31.9	Dark	Down	35.1	147.4	Up	06:23:09 - 06:53:09	3498
Parker	06:38:09	-32.2	Dark	Down	35.4	147.3	Up	06:23:09 - 06:53:09	3470
Blythe	06:38:10	-32.7	Dark	Down	35.7	146.8	Up	06:23:10 - 06:53:10	3422
CPSLO	06:38:28	-29.5	Dark	Down	31.5	141.4	Up	06:23:28 - 06:53:28	3417
Idyllwild	06:38:17	-32.1	Dark	Down	34.7	144.6	Up	06:23:17 - 06:53:17	3383
Wildwood	06:38:23	-31.2	Dark	Down	33.4	142.9	Up	06:23:23 - 06:53:23	3368
Calipatria	06:38:13	-32.9	Dark	Down	35.7	145.6	Up	06:23:13 - 06:53:13	3361
Yuma	06:38:11	-33.6	Dark	Down	36.5	146.4	Up	06:23:11 - 06:53:11	3347

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 04HX78, (2019/06/01 06:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.29 153
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.32 146
53Nu Ser       17:20:49.7 -12:50:49  4.0  1.86 143
PPM 233132     17:29:07.3 -14:04:50  8.2  0.57 142
PPM 233094     17:27:24.5 -14:02:07  9.4  0.15 142
04HX78         17:26:48.2 -14:00:56 11.4       142
Positions are for J2000

Event circumstances last updated at 2018/09/26 17:28:07 UT

RECON