MPEC 2017-F148: 2001 HW7
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M.P.E.C. 2017-F148 Issued 2017 Mar. 27, 11:21 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
2001 HW7
Revision to MPEC 2001-H26
Additional Observations:
K01H07W C2017 03 19.39861 12 32 04.84 -07 51 28.2 21.1 VqEF148G96
K01H07W C2017 03 19.40298 12 32 04.59 -07 51 24.4 21.3 VqEF148G96
K01H07W C2017 03 19.40733 12 32 04.32 -07 51 21.2 21.8 VqEF148G96
K01H07W C2017 03 19.41170 12 32 04.10 -07 51 17.5 21.3 VqEF148G96
K01H07W C2017 03 26.31198 12 25 37.07 -06 15 02.3 20.7 VqEF148G96
K01H07W C2017 03 26.31622 12 25 36.77 -06 14 58.2 20.7 VqEF148G96
K01H07W C2017 03 26.32148 12 25 36.44 -06 14 53.2 20.4 VqEF148G96
K01H07W C2017 03 26.32681 12 25 36.06 -06 14 48.3 20.7 VqEF148G96
K01H07W C2017 03 27.26198 12 24 37.41 -05 59 56.7 20.8 VqEF148I52
K01H07W C2017 03 27.26579 12 24 37.17 -05 59 52.7 20.5 VqEF148I52
K01H07W C2017 03 27.26959 12 24 36.90 -05 59 49.4 20.4 VqEF148I52
K01H07W C2017 03 27.27326 12 24 36.64 -05 59 45.7 20.3 VqEF148I52
Observer details:
G96 Mt. Lemmon Survey. Observers G. J. Leonard, A. D. Grauer. Measurers
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. G. Matheny, R. L. Seaman,
F. C. Shelly. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer G. J. Leonard.
Measurers 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. G. Matheny,
R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170319 G96 1.45+ 0.44- 170327 I52 1.57+ 0.47- MPO 57821 -1.3 day
Orbital elements:
2001 HW7 Earth MOID = 0.1420 AU
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5 MPC
M 313.23102 (2000.0) P Q
n 0.30804721 Peri. 82.30338 +0.13774816 +0.98978916
a 2.1713235 Node 195.75661 -0.95361011 +0.12253254
e 0.5118920 Incl. 7.75558 -0.26768116 +0.07282306
P 3.20 H 20.7 G 0.15 U 1
Residuals in seconds of arc
010418 691 0.1- 0.1- 010501 926 0.9- 1.0+ 010824 691 0.4+ 0.4-
010418 691 0.2+ 0.4- 010523 540 (0.9- 2.4-) 010917 691 0.0 0.3+
010418 691 0.0 0.1+ 010523 540 (0.1+ 2.2-) 010917 691 0.6- 0.3+
010421 291 0.2+ 0.6- 010523 540 0.4- 1.0- 010917 691 0.1+ 0.3+
010421 291 0.5+ 0.9- 010731 413 0.1+ 0.5+ 170319 G96 0.8+ 0.7-
010421 291 0.2- 0.3+ 010731 413 0.0 0.3- 170319 G96 0.5+ 0.1-
010421 691 0.0 0.2+ 010731 413 0.2+ 0.6+ 170319 G96 0.0 0.1-
010421 691 0.1- 0.8+ 010731 413 0.3+ 0.2+ 170319 G96 0.2+ 0.4+
010421 926 0.5- 0.9+ 010731 413 0.3+ 0.8+ 170326 G96 0.2- 0.2-
010421 926 0.1- 0.0 010731 413 0.1+ 0.0 170326 G96 0.4- 0.1-
010423 691 0.5+ 0.2+ 010731 413 0.3- 0.2+ 170326 G96 0.1- 0.1-
010423 691 0.3- 0.9+ 010801 658 0.9- 0.8- 170326 G96 0.4- 0.2-
010428 691 (0.3+ 1.8-) 010801 658 0.7- 0.8- 170327 I52 0.4- 0.5-
010428 691 (0.4+ 1.8-) 010801 658 0.4- 0.7- 170327 I52 0.1- 0.1-
010428 691 (0.6+ 2.0-) 010804 608 (1.7- 0.0 ) 170327 I52 0.2- 0.5-
010501 926 1.4+ 0.8+ 010824 691 0.5+ 0.1- 170327 I52 0.3- 0.4-
Ephemeris:
2001 HW7 a,e,i = 2.17, 0.51, 8 q = 1.0598
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 02 25 12 41 27.9 -10 27 45 0.9386 1.8255 142.4 19.3 22.8
...
2017 03 12 12 37 12.3 -09 08 05 0.7590 1.7231 158.7 12.1 22.0
...
2017 03 20 12 31 35.0 -07 43 54 0.6803 1.6677 168.3 6.9 21.5
...
2017 03 26 12 25 56.5 -06 19 46 0.6297 1.6261 175.5 2.8 21.0
2017 03 27 12 24 53.9 -06 04 01 0.6220 1.6191 176.4 2.2 21.0
2017 03 28 12 23 49.8 -05 47 47 0.6146 1.6122 177.0 1.9 20.9
...
2017 04 03 12 16 59.1 -04 01 01 0.5741 1.5704 172.0 5.1 20.9
...
2017 04 11 12 07 17.7 -01 18 19 0.5317 1.5149 161.1 12.4 21.0
...
2017 04 26 11 51 15.9 +04 10 26 0.4827 1.4125 140.5 26.9 21.1
A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-F148
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