Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
1605 Milankovitch (1936 GA)
Classification: Main-belt Asteroid          SPK-ID: 2001605
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07680922978184118 3.0478e-08  
a 3.011981340101798 1.2199e-08 au
q 2.780633373251301 9.0492e-08 au
i 10.56272796516256 3.9431e-06 deg
node 173.7248714991676 1.8577e-05 deg
peri 275.9300162970382 3.1879e-05 deg
M 139.5483382653137 2.6356e-05 deg
tp 2458260.385332856599
0.00013902 TDB
period 1909.31173730681
n .1885496186745282 1.1455e-09 deg/d
Q 3.243329306952295 1.3136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2813  
   data-arc span      30610 days (83.81 yr)  
   first obs. used      1936-04-13  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42763  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:59:25  

Additional Information
 Earth MOID = 1.82248 au 
 Jupiter MOID = 1.93215 au 
 T_jup = 3.219 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.3   n/a MPO473785  
diameter diameter 29.598 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 11.60 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Cooney, W.R. (2005) Minor Planet Bull. 32, 15-16.]
[Behrend, R. (2006) Observatoire de Geneve web site,]
geometric albedo albedo 0.184   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

1605 Milankovitch           Discovered 1936 Apr. 13 by P. Djurkovic at Uccle.
Named in memory of M. Milankovitch (1879-1958), famous Yugoslav astronomer, celestial mechanician and mathematician, known for his astronomical theory of long-term changes in the earth's climate and for numerous papers on the history of astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5449Last Updated: 2006-03-21

[ show close-approach data ]
Alternate Designations
 1936 GA = 1925 DC = 1931 KB = 1938 ST = 1941 FA = 1946 FF = 1949 UC1 = 1968 KP = A907 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Feb-24 08:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin