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4836 Medon (1989 CK1)
Classification: Jupiter Trojan          SPK-ID: 2004836
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1078963753607812 3.9835e-08  
a 5.209932869281286 9.3604e-08 au
q 4.647799996812841 2.5356e-07 au
i 19.39808431756756 4.2112e-06 deg
node 82.04490253322226 1.5226e-05 deg
peri 34.22786525144814 3.1805e-05 deg
M 252.1132463857651 3.1027e-05 deg
tp 2460302.204008611297
(2023-Dec-23.70400861)
0.00039761 TDB
period 4343.567930273109
11.89
0.00011706
3.205e-07
d
yr
n .08288117183362767 2.2336e-09 deg/d
Q 5.772065741749731 1.037e-07 au
  Orbit Determination Parameters
   # obs. used (total)      2702  
   data-arc span      12403 days (33.96 yr)  
   first obs. used      1986-12-02  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37671  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:19:28  

Additional Information
 Earth MOID = 3.68242 au 
 Jupiter MOID = .329142 au 
 T_jup = 2.875 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457170.5 (2015-May-28.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1089874046295698 3.9742e-08  
q 4.634088554890973 2.5205e-07 au
tp 2455970.145469735373
(2012-Feb-12.64546974)
0.00032532 TDB
node 82.05349023663827 1.5222e-05 deg
peri 34.58481176597895 3.1622e-05 deg
i 19.41089155462068 4.2141e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2702  
   data-arc span      12403 days (33.96 yr)  
   first obs. used      1986-12-02  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37671  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:19:28  

Additional Information
 Jupiter MOID = .329142 au 
 T_jup = 2.875 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.579430267779923E-15 -9.55024993083953E-15 -9.526499882253845E-13 2.122414179025245E-16 -1.215649208227584E-13 -4.263498336957365E-16
q -9.55024993083953E-15 6.352868159248185E-14 1.766057022624725E-11 2.707334363805169E-15 1.880101233992994E-12 8.694812877617962E-15
tp -9.526499882253845E-13 1.766057022624725E-11 1.058314692729775E-7 -1.15561037540275E-11 9.080300992377267E-9 2.303588150740079E-11
node 2.122414179025245E-16 2.707334363805169E-15 -1.15561037540275E-11 2.317200349865132E-10 -2.191848579625514E-10 -9.772014140468275E-12
peri -1.215649208227584E-13 1.880101233992994E-12 9.080300992377267E-9 -2.191848579625514E-10 9.999447763255932E-10 1.129255522683159E-11
i -4.263498336957365E-16 8.694812877617962E-15 2.303588150740079E-11 -9.772014140468275E-12 1.129255522683159E-11 1.775869889893729E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.5   n/a MPO337293  
diameter diameter 63.277 km 0.768 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 9.818 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
geometric albedo albedo 0.070   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

4836 Medon (1989 CK1)          Discovered 1989-Feb-02 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 CK1 = 1986 XM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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