MPEC 2018-H80 : 2018 HX1
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M.P.E.C. 2018-H80 Issued 2018 Apr. 24, 22:16 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2018 HX1
Observations:
K18H01X* C2018 04 23.21655 14 30 13.39 +50 10 01.9 17.33RUEH080I41
K18H01X C2018 04 23.21690 14 30 10.87 +50 09 38.3 17.33RUEH080I41
K18H01X C2018 04 23.21701 14 30 10.06 +50 09 31.6 17.35RUEH080I41
K18H01X C2018 04 23.21736 14 30 07.56 +50 09 08.0 17.35RUEH080I41
K18H01X C2018 04 23.21747 14 30 06.80 +50 09 01.6 17.29RUEH080I41
K18H01X C2018 04 23.21781 14 30 04.35 +50 08 38.6 17.29RUEH080I41
K18H01X C2018 04 23.22707 14 28 59.03 +49 58 25.1 17.63RUEH080I41
K18H01X C2018 04 23.22742 14 28 56.62 +49 58 02.3 17.63RUEH080I41
K18H01X C2018 04 23.22752 14 28 55.75 +49 57 55.8 17.65RUEH080I41
K18H01X C2018 04 23.22787 14 28 53.32 +49 57 33.1 17.65RUEH080I41
K18H01X C2018 04 23.23574 14 27 59.01 +49 48 57.9 17.44RUEH080I41
K18H01X C2018 04 23.23609 14 27 56.58 +49 48 35.3 17.44RUEH080I41
K18H01X C2018 04 23.23620 14 27 55.76 +49 48 27.4 17.56RUEH080I41
K18H01X C2018 04 23.23655 14 27 53.37 +49 48 04.2 17.56RUEH080I41
K18H01X C2018 04 23.23666 14 27 52.70 +49 47 58.2 17.36RUEH080I41
K18H01X C2018 04 23.23700 14 27 50.31 +49 47 34.8 17.36RUEH080I41
K18H01X C2018 04 23.23757 14 27 46.45 +49 46 58.5 17.60RUEH080I41
K18H01X C2018 04 23.23792 14 27 44.08 +49 46 36.3 17.60RUEH080I41
K18H01X C2018 04 23.34940914 16 24.29 +47 52 42.4 17.4 GUEH080H01
K18H01X C2018 04 23.35302914 16 05.22 +47 49 13.6 17.7 GUEH080H01
K18H01X C2018 04 23.35636 14 15 50.27 +47 46 21.6 17.5 GUEH080I52
K18H01X C2018 04 23.35654 14 15 49.32 +47 46 11.1 17.5 GUEH080I52
K18H01X C2018 04 23.35672 14 15 48.37 +47 46 00.8 17.5 GUEH080I52
K18H01X C2018 04 23.35691 14 15 47.42 +47 45 50.3 17.4 GUEH080I52
K18H01X C2018 04 23.36378214 15 09.54 +47 38 58.3 17.7 GUEH080H01
K18H01X C2018 04 23.37284114 14 23.67 +47 30 25.5 17.3 GUEH080H01
K18H01X KC2018 04 23.86035 13 49 37.60 +41 54 09.0 18.6 RUEH080K65
K18H01X KC2018 04 23.87085 13 49 15.05 +41 48 59.0 18.1 RUEH080K65
K18H01X KC2018 04 23.88137 13 48 52.71 +41 43 51.1 18.4 RUEH080K65
K18H01X KC2018 04 23.89170 13 48 31.06 +41 38 51.9 18.1 RUEH080K65
K18H01X KC2018 04 23.91790 13 47 37.91 +41 26 24.5 17.8 RqEH080160
K18H01X KC2018 04 23.91899 13 47 35.74 +41 25 54.1 18.3 RqEH080160
K18H01X KC2018 04 23.92008 13 47 33.54 +41 25 24.3 18.7 RqEH080160
K18H01X KC2018 04 23.92116 13 47 31.37 +41 24 53.6 18.5 RqEH080160
K18H01X KC2018 04 24.09106 13 42 56.35 +40 11 04.2 18.6 SEH080932
K18H01X KC2018 04 24.11444 13 42 19.25 +40 02 06.5 19.0 SEH080932
K18H01X KC2018 04 24.13887 13 41 41.29 +39 52 53.6 18.5 SEH080932
K18H01X C2018 04 24.14179 13 41 50.07 +39 51 35.2 18.5 GUEH080I52
K18H01X C2018 04 24.14197 13 41 49.79 +39 51 31.2 18.7 GUEH080I52
K18H01X C2018 04 24.14216 13 41 49.53 +39 51 27.4 18.6 GUEH080I52
K18H01X C2018 04 24.14234 13 41 49.24 +39 51 23.1 18.5 GUEH080I52
K18H01X KC2018 04 24.14990 13 41 24.49 +39 48 47.8 19.1 SEH080932
K18H01X KC2018 04 24.22923 13 39 37.48 +39 20 28.3 18.5 RqEH080734
K18H01X KC2018 04 24.23113 13 39 34.86 +39 19 49.1 18.4 RqEH080734
K18H01X KC2018 04 24.23471 13 39 29.90 +39 18 35.1 18.4 RqEH080734
K18H01X KC2018 04 24.23586 13 39 28.29 +39 18 11.0 18.3 RqEH080734
K18H01X C2018 04 24.43043 13 35 32.37 +38 16 16.1 17.9 GUEH080I52
K18H01X C2018 04 24.43061 13 35 32.15 +38 16 12.8 18.1 GUEH080I52
K18H01X C2018 04 24.43079 13 35 31.91 +38 16 09.0 17.3 GUEH080I52
K18H01X C2018 04 24.43097 13 35 31.74 +38 16 05.9 17.6 GUEH080I52
K18H01X KC2018 04 24.81603 13 30 33.69 +36 40 01.4 18.7 GUEH080587
K18H01X KC2018 04 24.82505 13 30 26.80 +36 38 10.9 UEH080587
K18H01X KC2018 04 24.82535 13 30 26.53 +36 38 07.1 UEH080587
K18H01X KC2018 04 24.82956 13 30 23.36 +36 37 15.3 UEH080587
K18H01X KC2018 04 24.82962 13 30 21.03 +36 37 18.9 18.3 RoEH080K88
K18H01X KC2018 04 24.83374 13 30 17.83 +36 36 28.7 18.3 RoEH080K88
K18H01X KC2018 04 24.83786 13 30 14.76 +36 35 37.9 17.8 RoEH080K88
K18H01X KC2018 04 24.84529 13 30 10.53 +36 34 09.1 19.0 VqEH080595
K18H01X KC2018 04 24.85094 13 30 06.24 +36 33 01.3 19.1 VqEH080595
K18H01X KC2018 04 24.85659 13 30 01.94 +36 31 53.2 18.8 VqEH080595
K18H01X C2018 04 24.87415 13 29 51.95 +36 28 28.2 19.4 RqEH080B74
K18H01X C2018 04 24.87920 13 29 48.15 +36 27 28.1 19.3 RqEH080B74
K18H01X C2018 04 24.88197 13 29 46.15 +36 26 55.8 19.4 RqEH080B74
Observer details:
160 Castelmartini. Observers M. Jaeger, E. Prosperi, S. Prosperi, W. Vollmann.
Measurer E. Prosperi. 0.35-m f/10 Schmidt-Cassegrain + CCD.
587 Sormano. Observers E. Calo', L. Catallo, M. Conti, R. Ferracani, R. Nava.
Measurer R. Nava. 0.5-m f/6.8 reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.61-m f/4.0 reflector + CCD.
734 Farpoint Observatory. Observer G. Hug. 0.69-m reflector + CCD.
932 John J. McCarthy Obs., New Milford. Observer M. Robson. 0.4-m f/7.4
Schmidt-Cassegrain + CCD.
B74 Santa Maria de Montmagastrell. Observer J. M. Bosch. 0.40-m f/10
Schmidt-Cassegrain + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
I41 Palomar Mountain--ZTF. Observer A. U. Tomatic. Measurers Q.-Z. Ye,
T. A. Prince, H.-W. Lin, F. Masci. 1.2-m f/2.4 Schmidt.
I52 Steward Observatory, Mt. Lemmon Station. Observer B. M. Africano.
Measurers B. M. Africano, E. J. Christensen, D. C. Fuls, A. R. Gibbs,
A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
K65 Cesena. Observer V. Tinella. 0.40-m f/7 Schmidt-Cassegrain + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
Orbital elements:
2018 HX1 Earth MOID = 0.0064 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 22.94222 (2000.0) P Q
n 0.95851063 Peri. 232.08927 +0.18162355 -0.93920072
a 1.0187589 Node 211.50487 +0.98189428 +0.15698805
e 0.6380139 Incl. 33.89210 -0.05381923 -0.30537971
P 1.03 H 24.5 G 0.15 U 6
Residuals in seconds of arc
180423 I41 1.4+ 0.5- 180423 I52 2.0+ 0.3- 180424 734 0.1+ 0.6-
180423 I41 1.3+ 0.8- 180423 I52 1.9+ 0.3- 180424 734 0.3+ 0.5-
180423 I41 1.1+ 0.2- 180423 I52 2.3+ 0.1+ 180424 734 0.4+ 0.5-
180423 I41 1.1+ 0.5- 180423 H01 2.4+ 0.1+ 180424 734 0.1+ 0.8-
180423 I41 1.4+ 0.4+ 180423 H01 2.3+ 0.1- 180424 I52 1.8+ 0.2+
180423 I41 1.1+ 0.1+ 180423 K65 0.3+ 0.1+ 180424 I52 1.5+ 0.1+
180423 I41 2.1+ 0.6- 180423 K65 0.7+ 0.2+ 180424 I52 1.0+ 0.4-
180423 I41 2.5+ 0.3- 180423 K65 0.6+ 0.1+ 180424 I52 1.2+ 0.3-
180423 I41 0.8+ 0.2- 180423 K65 0.7+ 0.4+ 180424 587 0.1- 0.2+
180423 I41 1.0+ 0.1+ 180423 160 0.3+ 0.1+ 180424 587 0.1+ 0.0
180423 I41 2.1+ 0.2+ 180423 160 0.6+ 0.5+ 180424 587 0.4- 0.1-
180423 I41 1.8+ 0.4+ 180423 160 0.5+ 1.4+ 180424 587 0.1+ 0.6-
180423 I41 1.1+ 0.3- 180423 160 0.5+ 1.1+ 180424 K88 0.6+ 0.4+
180423 I41 1.2+ 0.7- 180424 932 0.1- 0.0 180424 K88 0.2+ 0.8+
180423 I41 2.0+ 0.5+ 180424 932 0.7+ 0.1+ 180424 K88 1.2+ 0.4+
180423 I41 1.4+ 0.8- 180424 932 0.3+ 0.4- 180424 595 0.1- 0.1-
180423 I41 1.7+ 0.0 180424 I52 0.0 0.0 180424 595 0.0 0.5+
180423 I41 1.9+ 0.6+ 180424 I52 0.1- 0.1- 180424 595 0.2- 0.6+
180423 H01 2.2+ 0.0 180424 I52 0.2+ 0.3+ 180424 B74 0.9+ 0.6+
180423 H01 2.2+ 0.0 180424 I52 0.1- 0.1- 180424 B74 0.6+ 0.2+
180423 I52 2.1+ 0.1- 180424 932 0.5+ 0.1+ 180424 B74 1.3+ 0.6+
Ephemeris:
2018 HX1 a,e,i = 1.02, 0.64, 34 q = 0.3688
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 25 01 01 26.6 -22 29 52 0.4292 0.6430 26.6 135.9 28.1
...
2018 04 09 00 59 51.3 -25 00 55 0.1936 0.8446 32.5 140.4 27.5
...
2018 04 17 00 52 29.5 -22 59 38 0.07700 0.9418 35.2 142.1 25.9
...
2018 04 23 15 03 37.3 +54 55 07 0.01201 1.0098 111.5 67.9 17.3
2018 04 24 13 45 08.7 +40 49 48 0.02519 1.0207 126.3 52.6 18.5
2018 04 25 13 28 24.4 +36 04 47 0.03924 1.0315 130.0 48.4 19.4
...
2018 05 01 13 11 08.8 +29 57 06 0.1254 1.0939 131.1 43.9 21.9
...
2018 05 09 13 09 05.6 +28 01 21 0.2414 1.1710 127.1 43.4 23.4
...
2018 05 24 13 13 17.1 +25 28 45 0.4627 1.2976 118.3 43.4 25.1
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-H80
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