RECON: TNO occultation with 202421

Event between (202421) 05UQ513 and star UC4-616-002248 with event index number of 154989

Geocentric closest approach at 2018/10/27 07:52:50 UTC

J2000 position of star is 00:47:22.1 +33:07:02
Equinox of date position of star is 00:48:20.5 +33:12:53
Stellar brightness R=12.3, use SENSEUP=16
Star is 51 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=20.3

[RECON map]
TNO is 48.0 AU from the Sun and 47.2 AU from the Earth.
The TNO is moving 25.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is 2489 km.
The sky-plane scale is 34202.6 km/arcsec.

The TNO has an absolute magnitude Hv=3.5
Diameter=1202.3 km assuming a 5% albedo -- 47.0 sec chord
Diameter=490.8 km assuming a 30% albedo -- 19.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 202421, (2018/10/27 07:53UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.4 +45:20:54  1.3 47.97  94
57Gam1And      02:05:03.8 +42:25:09  2.3 17.66  39
31Del And      00:40:20.4 +30:57:49  3.3  2.83  52
PPM 065648     00:49:56.0 +33:01:37  8.0  0.38  50
PPM 065633     00:49:01.9 +33:18:53 10.7  0.16  51
202421         00:48:23.4 +33:13:11 12.3        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 5.0 sigma about the mid-time.
The median site spacing is 24.8 km RECON observability=1.0 and success probability=1.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:51:20 -53.8 Dark Up 67.1 234.5 Up 07:40:40 - 08:01:59 -7356
Tonasket 07:51:20 -54.0 Dark Up 67.3 234.9 Up 07:40:40 - 08:01:59 -7381
Okanogan 07:51:21 -54.4 Dark Up 67.5 235.3 Up 07:40:42 - 08:02:01 -7413
Brewster 07:51:22 -54.7 Dark Up 67.8 235.6 Up 07:40:42 - 08:02:01 -7437
Manson/Chelan 07:51:23 -54.9 Dark Up 68.1 235.4 Up 07:40:43 - 08:02:02 -7452
Entiat 07:51:22 -55.1 Dark Up 68.3 235.7 Up 07:40:43 - 08:02:02 -7473
Wenatchee 07:51:24 -55.4 Dark Up 68.5 236.1 Up 07:40:44 - 08:02:03 -7498
Ellensburg 07:51:24 -55.8 Dark Up 68.8 236.6 Up 07:40:45 - 08:02:04 -7537
Yakima 07:51:25 -56.2 Dark Up 69.1 237.4 Up 07:40:46 - 08:02:05 -7580
Toppenish/White Swan 07:51:25 -56.4 Dark Up 69.1 238.2 Up 07:40:46 - 08:02:05 -7606
Pasco 07:51:22 -56.5 Dark Up 68.4 240.5 Up 07:40:42 - 08:02:01 -7647
Goldendale 07:51:26 -57.0 Dark Up 69.6 238.8 Up 07:40:46 - 08:02:05 -7655
The Dalles 07:51:28 -57.2 Dark Up 69.9 238.7 Up 07:40:48 - 08:02:07 -7671
George/Umatilla 07:51:22 -56.8 Dark Up 68.7 240.9 Up 07:40:43 - 08:02:02 -7678
PNWRO 07:51:21 -56.7 Dark Up 68.4 241.4 Up 07:40:42 - 08:02:01 -7678
Maupin 07:51:28 -57.6 Dark Up 70.1 239.8 Up 07:40:49 - 08:02:08 -7717
Madras/Culver 07:51:29 -58.2 Dark Up 70.4 241.1 Up 07:40:49 - 08:02:08 -7774
Sisters 07:51:30 -58.5 Dark Up 70.8 241.2 Up 07:40:51 - 08:02:10 -7799
Redmond 07:51:29 -58.5 Dark Up 70.6 241.9 Up 07:40:49 - 08:02:08 -7811
Bend 07:51:30 -58.7 Dark Up 70.8 242.2 Up 07:40:50 - 08:02:09 -7830
Oregon Observatory 07:51:30 -58.9 Dark Up 70.9 242.4 Up 07:40:51 - 08:02:10 -7846
La Pine/Gilchrist 07:51:30 -59.1 Dark Up 71.1 242.9 Up 07:40:51 - 08:02:10 -7866
North Lake 07:51:30 -59.5 Dark Up 70.9 245.0 Up 07:40:50 - 08:02:09 -7926
Chiloquin 07:51:33 -60.2 Dark Up 71.8 245.3 Up 07:40:53 - 08:02:12 -7975
Paisley 07:51:29 -60.1 Dark Up 70.9 247.0 Up 07:40:50 - 08:02:09 -7993
Klamath Falls 07:51:33 -60.6 Dark Up 71.9 246.4 Up 07:40:54 - 08:02:13 -8013
Tulelake 07:51:32 -60.8 Dark Up 71.8 247.6 Up 07:40:53 - 08:02:12 -8049
Lakeview 07:51:29 -60.6 Dark Up 70.9 248.6 Up 07:40:50 - 08:02:09 -8052
Cedarville 07:51:30 -61.2 Dark Up 71.0 250.7 Up 07:40:50 - 08:02:09 -8126
Fall River/Burney 07:51:33 -61.7 Dark Up 72.0 250.3 Up 07:40:53 - 08:02:12 -8147
Susanville 07:51:32 -62.4 Dark Up 71.7 253.2 Up 07:40:53 - 08:02:12 -8233
Greenville 07:51:33 -62.6 Dark Up 72.0 253.6 Up 07:40:53 - 08:02:12 -8255
Gimple 07:51:33 -62.6 Dark Up 71.9 253.7 Up 07:40:53 - 08:02:12 -8257
Quincy 07:51:33 -62.8 Dark Up 72.1 254.2 Up 07:40:53 - 08:02:12 -8276
Portola 07:51:32 -63.0 Dark Up 71.7 255.2 Up 07:40:53 - 08:02:12 -8302
Reno 07:51:30 -63.2 Dark Up 71.3 256.7 Up 07:40:51 - 08:02:10 -8346
Carson City 07:51:31 -63.5 Dark Up 71.4 257.8 Up 07:40:51 - 08:02:10 -8385
Gardnerville 07:51:32 -63.8 Dark Up 71.4 258.5 Up 07:40:52 - 08:02:11 -8412
Yerington 07:51:29 -63.7 Dark Up 70.9 259.0 Up 07:40:50 - 08:02:09 -8421
Hawthorne 07:51:28 -64.1 Dark Up 70.6 260.9 Up 07:40:49 - 08:02:08 -8483
Lee Vining 07:51:30 -64.7 Dark Up 71.1 262.0 Up 07:40:51 - 08:02:10 -8531
Niwot 07:50:48 -59.0 Dark Up 60.2 268.1 Up 07:40:08 - 08:01:27 -8537
Tonopah 07:51:24 -64.4 Dark Up 69.6 263.4 Up 07:40:45 - 08:02:04 -8565
Bishop 07:51:29 -65.2 Dark Up 70.6 264.4 Up 07:40:50 - 08:02:09 -8613
Beatty 07:51:24 -65.5 Dark Up 69.3 266.9 Up 07:40:45 - 08:02:04 -8699
Lone Pine 07:51:29 -65.9 Dark Up 70.4 266.8 Up 07:40:50 - 08:02:09 -8702
Indian Springs 07:51:21 -65.6 Dark Up 68.5 268.4 Up 07:40:42 - 08:02:01 -8758
CPSLO 07:51:37 -67.5 Dark Up 72.5 268.9 Up 07:40:58 - 08:02:17 -8775
Henderson 07:51:20 -65.9 Dark Up 67.9 270.2 Up 07:40:40 - 08:01:59 -8830
Searchlight/Boulder City 07:51:20 -66.5 Dark Up 67.9 271.7 Up 07:40:40 - 08:01:59 -8893
Patrick 07:51:20 -66.3 Dark Up 67.0 272.3 Up 07:40:40 - 08:01:59 -8920
Laughlin/Bullhead City 07:51:20 -66.7 Dark Up 67.6 272.6 Up 07:40:40 - 08:01:59 -8932
Kingman/Dolan Springs 07:51:20 -66.5 Dark Up 67.2 272.8 Up 07:40:40 - 08:01:59 -8940
Wildwood 07:51:33 -68.5 Dark Up 70.8 273.6 Up 07:40:54 - 08:02:13 -8956
Mohave Valley 07:51:20 -66.9 Dark Up 67.6 273.2 Up 07:40:40 - 08:01:59 -8961
DCO 07:51:20 -66.3 Dark Up 66.4 273.4 Up 07:40:40 - 08:01:59 -8967
Lake Havasu City 07:51:20 -67.2 Dark Up 67.3 274.3 Up 07:40:40 - 08:01:59 -9009
Idyllwild 07:51:28 -68.5 Dark Up 69.2 275.3 Up 07:40:48 - 08:02:07 -9039
Parker 07:51:20 -67.6 Dark Up 67.3 275.1 Up 07:40:40 - 08:01:59 -9048
Blythe 07:51:21 -68.1 Dark Up 67.5 276.3 Up 07:40:42 - 08:02:01 -9098
Calipatria 07:51:25 -68.9 Dark Up 68.2 277.2 Up 07:40:45 - 08:02:04 -9131
Yuma 07:51:22 -69.0 Dark Up 67.4 278.5 Up 07:40:43 - 08:02:02 -9196

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 202421, (2018/10/27 07:53UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 47.97  94
57Gam1And      02:03:54.0 +42:19:46  2.3 17.66  39
31Del And      00:39:19.9 +30:51:38  3.3  2.83  52
PPM 065648     00:48:54.6 +32:55:28  8.0  0.38  50
PPM 065633     00:48:00.6 +33:12:45 10.7  0.16  51
202421         00:47:22.1 +33:07:02 12.3        51
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:01:26 UT

Marc W. Buie, Southwest Research Institute

RECON