[Iaude] MPEC K78: 2021 KE2 [a=2.14,e=0.47,i=40.3,H=19.9]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun May 23 09:04:07 EDT 2021


M.P.E.C. 2021-K78                                  Issued 2021 May 23, 13:02 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2021 KE2                                    


Observations:
     K21K02E* C2021 05 19.42182721 25 28.15 +12 42 37.9          21.80GVEK078V00
     K21K02E  C2021 05 19.42618021 25 29.01 +12 42 34.2          21.74GVEK078V00
     K21K02E  C2021 05 19.43051521 25 29.86 +12 42 30.2          21.46GVEK078V00
     K21K02E  C2021 05 19.43485421 25 30.73 +12 42 26.5          22.11GVEK078V00
     K21K02E KC2021 05 19.46022 21 25 35.75 +12 42 04.3          22.1 RoEK078291
     K21K02E KC2021 05 19.46322 21 25 36.35 +12 42 01.8          21.8 RoEK078291
     K21K02E KC2021 05 19.46622 21 25 36.96 +12 41 58.6          21.9 RoEK078291
     K21K02E mC2021 05 20.47027021 29 00.90 +12 26 32.6          21.73GVEK078V00
     K21K02E mC2021 05 20.47098521 29 01.05 +12 26 32.0          22.14GVEK078V00
     K21K02E mC2021 05 20.47170121 29 01.19 +12 26 31.2          21.96GVEK078V00
     K21K02E |C2021 05 22.39591 21 35 40.21 +11 54 45.2          21.7 GVEK078807
     K21K02E |C2021 05 22.40145 21 35 41.36 +11 54 39.3          21.7 GVEK078807
     K21K02E KC2021 05 22.40274821 35 42.02 +11 54 25.8          21.41GVEK078V06
     K21K02E |C2021 05 22.40699 21 35 42.50 +11 54 33.5          21.7 GVEK078807
     K21K02E KC2021 05 22.40990621 35 43.50 +11 54 18.3          21.53GVEK078V06
     K21K02E KC2021 05 22.41706321 35 44.99 +11 54 10.8          21.40GVEK078V06
     K21K02E KC2021 05 22.42422021 35 46.48 +11 54 03.0          21.17GVEK078V06
     K21K02E  C2021 05 22.43353221 35 48.37 +11 53 53.4          21.4 GVEK078H01
     K21K02E  C2021 05 22.43910121 35 49.52 +11 53 47.7          21.9 GVEK078H01
     K21K02E  C2021 05 22.44887021 35 51.53 +11 53 37.7          21.5 GVEK078H01
     K21K02E KC2021 05 23.42999921 39 19.74 +11 36 01.0          21.21GVEK078V06
     K21K02E KC2021 05 23.43477021 39 20.81 +11 35 56.2          21.08GVEK078V06
     K21K02E KC2021 05 23.43954221 39 21.77 +11 35 50.7          20.85GVEK078V06

Observer details:
291 LPL/Spacewatch II.  Observer R. A. Mastaler.  1.8-m f/2.7 reflector + CCD.
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
    Horn.  1.00-m f/10.0 astrograph + CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
V00 Kitt Peak-Bok.  Observer H. Groeller.  Measurers M. J. Brucker, E. J.
    Christensen, C. E. Woodward, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
    Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. S.
    McMillan, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
    Wierzchos.  2.25-m reflector + CCD.
V06 Catalina Sky Survey-Kuiper.  Observer D. C. Fuls.  Measurers E. J.
    Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.55-m reflector +
    1K CCD.

Orbital elements:
2021 KE2                                                 Earth MOID = 0.1540 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
M 294.18074              (2000.0)            P               Q                  
n   0.31425813     Peri.  205.35438     +0.65714816     +0.46427737             
a   2.1426194      Node   113.26838     -0.53314841     +0.84318379             
e   0.4681261      Incl.   40.26900     -0.53283118     -0.27108601             
P   3.14           H   19.99          G   0.15           U   9                  
Residuals in seconds of arc
210519 V00  0.1+  0.1-    210520 V00  0.0   0.0     210522 V06  0.1+  0.4-
210519 V00  0.0   0.1+    210520 V00  0.1+  0.0     210522 H01  0.0   0.1-
210519 V00  0.2-  0.1-    210522 807  0.2-  0.0     210522 H01  0.1-  0.0
210519 V00  0.0   0.0     210522 807  0.0   0.1-    210522 H01  0.1-  0.1+
210519 291  0.2-  0.2+    210522 V06  0.0   0.1+    210523 V06  0.2-  0.0
210519 291  0.1-  0.3+    210522 807  0.1-  0.1-    210523 V06  0.8+  0.4+
210519 291  0.1+  0.2-    210522 V06  0.1-  0.0     210523 V06  0.1+  0.1+
210520 V00  0.0   0.1+    210522 V06  0.0   0.1-

Ephemeris:
2021 KE2                 a,e,i = 2.14, 0.47, 40                  q = 1.1396
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 23    20 08 24.5 +15 53 08   1.1063  1.4310    85.2    44.4    22.7
...
2021 05 08    20 49 42.1 +14 47 38   0.9286  1.3472    88.0    48.5    22.3
...
2021 05 16    21 14 13.3 +13 29 16   0.8360  1.3059    89.5    50.7    22.1
...
2021 05 22    21 34 16.9 +12 01 29   0.7687  1.2770    90.6    52.4    21.9
2021 05 23    21 37 47.6 +11 43 56   0.7578  1.2723    90.7    52.7    21.8
2021 05 24    21 41 21.5 +11 25 28   0.7469  1.2678    90.9    53.0    21.8
...
2021 05 30    22 03 58.7 +09 13 35   0.6839  1.2416    91.9    54.7    21.6
...
2021 06 07    22 37 57.9 +05 11 40   0.6078  1.2104    93.1    56.9    21.4
...
2021 06 22    23 56 06.1 -06 22 44   0.5057  1.1659    93.9    60.4    21.0

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-K78




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