RECON: TNO occultation with 499514

Event between (499514) 10OO127 and star UC4-518-143188 with event index number of 357372

Geocentric closest approach at 2020/10/07 05:23:54 UTC

J2000 position of star is 22:12:16.3 +13:32:43
Equinox of date position of star is 22:13:11.4 +13:38:20
Stellar brightness R=15.6, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 45.1 AU from the Sun and 44.4 AU from the Earth.
The TNO is moving 21.7 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 244 seconds.
The 1-sigma cross-track error in the shadow position is 4043 km.
The sky-plane scale is 32175.9 km/arcsec.

The TNO has an absolute magnitude Hv=4.6
Diameter=724.5 km assuming a 5% albedo -- 33.4 sec chord
Diameter=295.8 km assuming a 30% albedo -- 13.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 499514, (2020/10/07 05:24UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:08.4 +45:21:19  1.3 37.11  94
Markab         23:05:47.8 +15:19:03  2.5 12.82  80
PPM 141171     22:12:51.6 +16:08:37  6.5  2.50  92
PPM 141135     22:11:20.2 +13:51:05  8.4  0.51  93
PPM 141161     22:12:25.1 +13:32:54 10.0  0.23  93
499514         22:13:17.1 +13:38:54 15.6        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 3.7 sigma about the mid-time.
The median site spacing is 16.2 km RECON observability=1.0 and success probability=9.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 05:21:46 -36.4 Dark Up 53.5 186.5 Up 05:06:46 - 05:36:46 -2481
Kelowna 05:21:45 -36.5 Dark Up 53.5 187.0 Up 05:06:45 - 05:36:45 -2496
Penticton 05:21:46 -36.7 Dark Up 53.9 186.8 Up 05:06:46 - 05:36:46 -2513
Okanagan Falls 05:21:47 -36.8 Dark Up 54.0 186.8 Up 05:06:47 - 05:36:47 -2525
Oliver 05:21:47 -36.9 Dark Up 54.2 186.9 Up 05:06:47 - 05:36:47 -2537
Anarchist Mountain Observatory 05:21:47 -37.1 Dark Up 54.4 187.3 Up 05:06:47 - 05:36:47 -2559
Oroville 05:21:48 -37.2 Dark Up 54.4 187.1 Up 05:06:48 - 05:36:48 -2560
Tonasket 05:21:48 -37.3 Dark Up 54.7 187.2 Up 05:06:48 - 05:36:48 -2577
Okanogan 05:21:49 -37.5 Dark Up 55.0 187.0 Up 05:06:49 - 05:36:49 -2594
Manson/Chelan 05:21:52 -37.5 Dark Up 55.5 186.1 Up 05:06:52 - 05:36:52 -2599
Brewster 05:21:51 -37.6 Dark Up 55.3 186.7 Up 05:06:51 - 05:36:51 -2603
Entiat 05:21:53 -37.6 Dark Up 55.8 186.1 Up 05:06:53 - 05:36:53 -2612
Wenatchee 05:21:54 -37.7 Dark Up 56.0 185.9 Up 05:06:54 - 05:36:54 -2625
Ellensburg 05:21:56 -37.9 Dark Up 56.4 185.6 Up 05:06:56 - 05:36:56 -2643
Yakima 05:21:57 -38.2 Dark Up 56.8 185.7 Up 05:06:57 - 05:36:57 -2671
Toppenish/White Swan 05:21:57 -38.4 Dark Up 57.1 186.0 Up 05:06:57 - 05:36:57 -2695
The Dalles 05:22:01 -38.5 Dark Up 57.9 184.7 Up 05:07:01 - 05:37:01 -2710
Goldendale 05:22:00 -38.5 Dark Up 57.6 185.3 Up 05:07:00 - 05:37:00 -2713
Maupin 05:22:02 -38.8 Dark Up 58.3 185.0 Up 05:07:02 - 05:37:02 -2746
Pasco 05:21:54 -39.1 Dark Up 57.1 188.3 Up 05:06:54 - 05:36:54 -2769
George/Umatilla 05:21:55 -39.2 Dark Up 57.4 187.9 Up 05:06:55 - 05:36:55 -2782
Madras/Culver 05:22:04 -39.1 Dark Up 58.8 185.0 Up 05:07:04 - 05:37:04 -2783
Sisters 05:22:06 -39.1 Dark Up 59.2 184.2 Up 05:07:06 - 05:37:06 -2783
PNWRO 05:21:54 -39.4 Dark Up 57.3 188.7 Up 05:06:54 - 05:36:54 -2799
Redmond 05:22:05 -39.3 Dark Up 59.2 184.9 Up 05:07:05 - 05:37:05 -2806
Bend 05:22:06 -39.4 Dark Up 59.4 184.7 Up 05:07:06 - 05:37:06 -2814
Oregon Observatory 05:22:07 -39.4 Dark Up 59.6 184.5 Up 05:07:07 - 05:37:07 -2820
La Pine/Gilchrist 05:22:08 -39.5 Dark Up 59.8 184.4 Up 05:07:08 - 05:37:08 -2832
Chiloquin 05:22:11 -40.0 Dark Up 60.9 183.9 Up 05:07:11 - 05:37:11 -2893
North Lake 05:22:07 -40.1 Dark Up 60.2 185.6 Up 05:07:07 - 05:37:07 -2896
Klamath Falls 05:22:12 -40.2 Dark Up 61.3 184.1 Up 05:07:12 - 05:37:12 -2923
Paisley 05:22:08 -40.7 Dark Up 60.7 186.5 Up 05:07:08 - 05:37:08 -2956
Tulelake 05:22:12 -40.6 Dark Up 61.5 184.8 Up 05:07:12 - 05:37:12 -2960
Lakeview 05:22:09 -41.1 Dark Up 61.2 187.0 Up 05:07:09 - 05:37:09 -3005
Fall River/Burney 05:22:15 -41.2 Dark Up 62.4 185.1 Up 05:07:15 - 05:37:15 -3031
Cedarville 05:22:10 -41.6 Dark Up 61.8 187.5 Up 05:07:10 - 05:37:10 -3064
Susanville 05:22:15 -42.0 Dark Up 63.0 186.8 Up 05:07:15 - 05:37:15 -3121
Greenville 05:22:16 -42.0 Dark Up 63.3 186.2 Up 05:07:16 - 05:37:16 -3125
Gimple 05:22:16 -42.0 Dark Up 63.3 186.4 Up 05:07:16 - 05:37:16 -3130
Quincy 05:22:15 -42.1 Dark Up 63.5 186.3 Up 05:07:15 - 05:37:15 -3140
Portola 05:22:15 -42.5 Dark Up 63.6 187.3 Up 05:07:15 - 05:37:15 -3177
Reno 05:22:15 -43.0 Dark Up 63.8 188.8 Up 05:07:15 - 05:37:15 -3234
Carson City 05:22:15 -43.3 Dark Up 64.1 189.0 Up 05:07:15 - 05:37:15 -3263
Gardnerville 05:22:16 -43.4 Dark Up 64.3 189.2 Up 05:07:16 - 05:37:16 -3285
Yerington 05:22:14 -43.8 Dark Up 64.2 190.5 Up 05:07:14 - 05:37:14 -3315
Hawthorne 05:22:14 -44.4 Dark Up 64.6 191.8 Up 05:07:14 - 05:37:14 -3381
Lee Vining 05:22:17 -44.4 Dark Up 65.2 191.0 Up 05:07:17 - 05:37:17 -3397
Bishop 05:22:16 -45.2 Dark Up 65.7 192.9 Up 05:07:16 - 05:37:16 -3486
Tonopah 05:22:11 -45.5 Dark Up 64.8 195.2 Up 05:07:11 - 05:37:11 -3499
CPSLO 05:22:29 -44.9 Dark Up 68.0 188.4 Up 05:07:29 - 05:37:29 -3513
Lone Pine 05:22:18 -45.9 Dark Up 66.4 194.1 Up 05:07:18 - 05:37:18 -3566
Beatty 05:22:13 -46.5 Dark Up 65.8 196.9 Up 05:07:13 - 05:37:13 -3618
Indian Springs 05:22:11 -47.4 Dark Up 65.8 199.6 Up 05:07:11 - 05:37:11 -3707
Wildwood 05:22:27 -47.0 Dark Up 68.9 194.4 Up 05:07:27 - 05:37:27 -3734
Henderson 05:22:10 -48.2 Dark Up 66.2 201.6 Up 05:07:10 - 05:37:10 -3791
Searchlight/Boulder City 05:22:11 -48.6 Dark Up 66.7 202.3 Up 05:07:11 - 05:37:11 -3842
Idyllwild 05:22:22 -48.5 Dark Up 68.8 199.5 Up 05:07:22 - 05:37:22 -3878
Laughlin/Bullhead City 05:22:11 -49.0 Dark Up 66.8 203.3 Up 05:07:11 - 05:37:11 -3887
Patrick 05:22:09 -49.3 Dark Up 66.4 204.7 Up 05:07:09 - 05:37:09 -3907
Mohave Valley 05:22:12 -49.2 Dark Up 67.1 203.6 Up 05:07:12 - 05:37:12 -3910
Kingman/Dolan Springs 05:22:10 -49.3 Dark Up 66.6 204.5 Up 05:07:10 - 05:37:10 -3915
Lake Havasu City 05:22:12 -49.6 Dark Up 67.4 204.6 Up 05:07:12 - 05:37:12 -3957
DCO 05:22:06 -49.9 Dark Up 66.4 206.6 Up 05:07:06 - 05:37:06 -3974
Niwot 05:21:30 -50.4 Dark Up 58.9 216.6 Up 05:06:30 - 05:36:30 -3977
Parker 05:22:14 -49.8 Dark Up 67.7 205.0 Up 05:07:14 - 05:37:14 -3988
Calipatria 05:22:19 -49.6 Dark Up 69.0 203.1 Up 05:07:19 - 05:37:19 -3999
Blythe 05:22:16 -49.9 Dark Up 68.2 204.9 Up 05:07:16 - 05:37:16 -4014
Yuma 05:22:18 -50.5 Dark Up 69.1 205.8 Up 05:07:18 - 05:37:18 -4089

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 499514, (2020/10/07 05:24UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 37.11  94
Markab         23:04:45.7 +15:12:18  2.5 12.82  80
PPM 141171     22:11:51.3 +16:02:26  6.5  2.50  92
PPM 141135     22:10:19.5 +13:44:55  8.4  0.51  93
PPM 141161     22:11:24.3 +13:26:43 10.0  0.23  93
499514         22:12:16.3 +13:32:43 15.6        92
Positions are for J2000

Event circumstances last updated at 2018/10/27 20:34:51 UT

Marc W. Buie, Southwest Research Institute

RECON