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2805 Kalle (1941 UM)
Classification: Main-belt Asteroid          SPK-ID: 2002805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1444738753516755 2.1345e-08  
a 2.693226542402711 9.7561e-09 au
q 2.304125666621798 5.9771e-08 au
i 6.880916089194192 8.9336e-07 deg
node 49.08918434395729 2.167e-06 deg
peri 309.8522406952272 6.0778e-06 deg
M 33.61005194664119 4.924e-06 deg
tp 2459245.778766873180
(2021-Jan-31.27876687)
2.1895e-05 TDB
period 1614.387386600799
4.42
8.7721e-06
2.402e-08
d
yr
n .2229948047091746 1.2117e-09 deg/d
Q 3.082327418183624 1.1166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      25192 days (68.97 yr)  
   first obs. used      1952-01-30  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:33:22  

Additional Information
 Earth MOID = 1.30764 au 
 Jupiter MOID = 2.3894 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457272.5 (2015-Sep-07.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461995871540865 2.1449e-08  
q 2.299227553886052 6.0239e-08 au
tp 2457633.822666111118
(2016-Sep-02.32266611)
2.1554e-05 TDB
node 49.16535568122802 2.1623e-06 deg
peri 310.4451302343821 5.9834e-06 deg
i 6.888200808027765 8.9415e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      25192 days (68.97 yr)  
   first obs. used      1952-01-30  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:33:22  

Additional Information
 Jupiter MOID = 2.3894 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.600470134564818E-16 -1.280102229206901E-15 1.26271681376201E-13 5.172091268688748E-15 6.471149172763111E-14 4.714918465374782E-15
q -1.280102229206901E-15 3.628701676433866E-15 -3.756155477646113E-13 -1.437855966376319E-14 -1.888485928551906E-13 -1.327380422521815E-14
tp 1.26271681376201E-13 -3.756155477646113E-13 4.645700810473358E-10 -4.674416848752341E-12 1.145604251930996E-10 -5.259227960024137E-12
node 5.172091268688748E-15 -1.437855966376319E-14 -4.674416848752341E-12 4.675715103732195E-12 -5.087995644180121E-12 7.065219377548324E-13
peri 6.471149172763111E-14 -1.888485928551906E-13 1.145604251930996E-10 -5.087995644180121E-12 3.580060609312567E-11 -1.343878126331665E-12
i 4.714918465374782E-15 -1.327380422521815E-14 -5.259227960024137E-12 7.065219377548324E-13 -1.343878126331665E-12 7.995024648891144E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.59   n/a E2021B10  
diameter diameter 16.623 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2805 Kalle (1941 UM)          Discovered 1941-Oct-15 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1941 UM = 1974 DG1 = 1979 FO3 = 1981 XX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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