2007 JH43 Precovery Images

2007 JH43 Precovery Images


A single additional image from DSS in 1984 slightly refines the orbit of this TNO.

The following astrometry was submitted to the Minor Planet Center:

     K07J43H   1984 03 07.72942 13 47 38.21 +02 14 33.9                      260
At the end of this page are the elements and residuals before and with the new data. The new orbit is more accurate because the object has now been observed for 24 years instead of 14 years.

View the Discovery Announcement. See also MPEC 2008-E109.


1984 Mar. 07.72942 UTC

RA 13h47m38.21s Dec. +0214'33.9"

60-minute exposure

Size = 150" x 150"

Siding Spring Observatory-DSS plate S864-02OA


Original elements and residuals from the Minor Planet Center

2007 JH43

Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 175.89937              (2000.0)            P               Q
n   0.00396762     Peri.  356.08056     +0.48657380     -0.82711921             T = 2410666.77136 JDT
a  39.5168847      Node    64.60229     +0.80977683     +0.30615374             q =    38.4808121
e   0.0262185      Incl.   18.14218     +0.32788325     +0.47132123
P 248              H    4.7           G   0.15           U   3
From 31 observations at 6 oppositions, 1994-2008, mean residual 0".33.
  
Residuals
19940309  413  0.1+  0.3+    20070510  675  0.0   1.1+    20080311  734  0.7+  0.2-
19960418  413  0.1+  0.2-    20070511  675  0.4+  0.3+    20080314  675  0.4-  0.1-
20020519  644  0.4-  0.0     20070511  675  0.2-  0.6+    20080314  673  0.3+  0.1-
20020519  644  0.0   0.4+    20070616  675  0.0   0.7-    20080314  673  0.4+  0.2+
20020519  644  0.0   0.3+    20070617  675 (0.2-  1.6-)   20080314  673  0.2+  0.3+
20020519  644  0.3+  0.4-    20070617  675  0.1-  0.2-    20080314  673  0.1+  0.5+
20020603  644  0.1+  0.1+    20070617  675  0.0   0.3-    20080314  675  0.4-  0.6-
20020611  644  0.4-  0.3-    20070618  675  0.0   0.2-    20080503  695  0.1-  0.0
20030505  246  0.0   0.7-    20070714  675  0.2+  0.1-    20080504  695  0.1-  0.1-
20030505  246  0.2-  0.0     20070716  675  0.1+  0.1-    20080504  695  0.1-  0.0
20070510  675  0.2+  0.5+    20080308  734  0.5-  0.3-


Revised elements and residuals from the Minor Planet Center (new astrometry is shown in red)

2007 JH43

Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 175.83929              (2000.0)            P               Q
n   0.00396801     Peri.  356.13705     +0.48575702     -0.82759972             T = 2410686.26519 JDT
a  39.5142976      Node    64.60237     +0.81007879     +0.30535532             q =    38.4760275
e   0.0262758      Incl.   18.14206     +0.32834811     +0.47099558
P 248              H    4.7           G   0.15           U   2
From 32 observations at 7 oppositions, 1984-2008, mean residual 0".33.
  
Residuals
19840307  413  0.2-  0.1-    20070510  675  0.2+  0.5+    20080308  734  0.6-  0.4-
19940309  413  0.3+  0.2+    20070510  675  0.0   1.1+    20080311  734  0.6+  0.2-
19960418  413  0.2+  0.2-    20070511  675  0.4+  0.3+    20080314  675  0.4-  0.2-
20020519  644  0.4-  0.1+    20070511  675  0.2-  0.6+    20080314  673  0.3+  0.1-
20020519  644  0.0   0.5+    20070616  675  0.0   0.7-    20080314  673  0.3+  0.2+
20020519  644  0.0   0.3+    20070617  675 (0.2-  1.6-)   20080314  673  0.1+  0.3+
20020519  644  0.3+  0.3-    20070617  675  0.0   0.2-    20080314  673  0.1+  0.5+
20020603  644  0.1+  0.2+    20070617  675  0.0   0.4-    20080314  675  0.5-  0.6-
20020611  644  0.4-  0.2-    20070618  675  0.0   0.2-    20080503  695  0.1-  0.0
20030505  246  0.1-  0.6-    20070714  675  0.2+  0.1-    20080504  695  0.1-  0.1-
20030505  246  0.2-  0.1+    20070716  675  0.1+  0.2-    20080504  695  0.1-  0.0


DSS precovery images are from DSS plate archive scans, which are copyright California Institute of Technology.


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