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    • MPEC 2018-D82 : 2018 DA2

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    M.P.E.C. 2018-D82                                Issued 2018 Feb. 27, 15:18 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 DA2

Observations:
     K18D02A* C2018 02 25.29187 11 53 28.76 +11 19 02.4          20.2 GUED082G96
     K18D02A  C2018 02 25.29707 11 53 26.85 +11 18 58.7                UED082G96
     K18D02A  C2018 02 25.30227 11 53 24.95 +11 18 53.8          20.7 GUED082G96
     K18D02A  C2018 02 25.30746 11 53 23.02 +11 18 49.0          20.9 GUED082G96
     K18D02A  C2018 02 25.42772 11 52 38.75 +11 17 04.2          21.8 GUED082I52
     K18D02A  C2018 02 25.42938 11 52 38.13 +11 17 01.9          22.1 GUED082I52
     K18D02A  C2018 02 25.43157 11 52 37.30 +11 17 01.2          20.9 GUED082I52
     K18D02A  C2018 02 25.43323 11 52 36.66 +11 16 59.2          21.2 GUED082I52
     K18D02A |C2018 02 26.19217 11 48 01.89 +11 06 08.6          20.7 GUED082807
     K18D02A |C2018 02 26.19819 11 47 59.54 +11 06 03.1          20.6 GUED082807
     K18D02A |C2018 02 26.20427 11 47 57.16 +11 05 57.4          20.6 GUED082807
     K18D02A  C2018 02 26.40654 11 46 39.13 +11 01 56.5          20.1 GUED082I52
     K18D02A  C2018 02 26.40902 11 46 38.15 +11 01 54.2          20.2 GUED082I52
     K18D02A  C2018 02 26.41151 11 46 37.14 +11 01 51.8          20.3 GUED082I52
     K18D02A  C2018 02 26.41399 11 46 36.16 +11 01 49.1          20.6 GUED082I52
     K18D02A  C2018 02 27.34802 11 40 28.60 +10 45 52.3          20.7 GUED082I52
     K18D02A  C2018 02 27.35051 11 40 27.53 +10 45 49.2          20.7 GUED082I52
     K18D02A  C2018 02 27.35300 11 40 26.47 +10 45 47.6          20.5 GUED082I52

Observer details:
807 Cerro Tololo.  Observers T. Linder, R. Holmes.  1.00-m f/10.0 astrograph
    + CCD.
G96 Mt. Lemmon Survey.  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.
    1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer R. A. Kowalski.
    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.

Orbital elements:
2018 DA2                                                 Earth MOID = 0.0834 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 268.66597              (2000.0)            P               Q
n   1.18931662     Peri.  328.67645     +0.68862406     +0.72014221
a   0.8822758      Node   344.28785     -0.58353798     +0.48093957
e   0.4493737      Incl.   18.25002     -0.43044202     +0.50009232
P   0.83           H   23.4           G   0.15           U   9
Residuals in seconds of arc
180225 G96  0.4+  0.1-    180225 I52  0.3-  0.6+    180226 I52  0.1+  0.0
180225 G96  0.2+  0.6+    180225 I52  0.7-  0.1+    180226 I52  0.2-  0.1+
180225 G96  0.2+  0.1+    180226 807  0.2+  0.3-    180226 I52  0.2-  0.1-
180225 G96  0.3-  0.2-    180226 807  0.2+  0.2-    180227 I52  0.1+  0.1+
180225 I52  0.1+  0.1+    180226 807  0.2+  0.2-    180227 I52  0.1-  0.4-
180225 I52  0.0   0.7-    180226 I52  0.0   0.1-    180227 I52  0.1-  0.7+

Ephemeris:
2018 DA2                 a,e,i = 0.88, 0.45, 18                  q = 0.4858
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 01 28    12 54 29.6 +14 19 26   0.4423  1.2615   119.3    42.9    23.8
...
2018 02 12    12 41 18.6 +13 11 27   0.3065  1.2271   136.3    33.8    22.7
...
2018 02 20    12 18 52.1 +12 18 55   0.2402  1.2010   149.0    25.1    21.9
...
2018 02 26    11 49 12.7 +11 08 42   0.1963  1.1779   161.6    15.3    21.1
2018 02 27    11 42 49.0 +10 52 18   0.1896  1.1738   164.1    13.4    20.9
2018 02 28    11 35 56.4 +10 34 05   0.1832  1.1695   166.7    11.3    20.8
...
2018 03 06    10 43 26.6 +07 55 55   0.1510  1.1423   174.2     5.0    20.0
...
2018 03 14    09 05 53.9 +01 49 53   0.1308  1.1011   142.8    33.1    20.6
...
2018 03 29    06 22 37.8 -09 08 29   0.1668  1.0087    88.8    81.7    22.4

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-D82

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