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2988 Korhonen (1943 EM)
Classification: Main-belt Asteroid          SPK-ID: 2002988
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1244890199420786 3.7641e-08  
a 2.609130224977876 1.148e-08 au
q 2.284322160369125 9.8103e-08 au
i 14.7334654196202 3.9965e-06 deg
node 100.8923865452771 1.8181e-05 deg
peri 133.7853794848133 2.5796e-05 deg
M 55.68480079111817 1.8239e-05 deg
tp 2458762.390770231136
(2019-Oct-05.89077023)
7.7948e-05 TDB
period 1539.366604512724
4.21
1.016e-05
2.782e-08
d
yr
n .2338624203907266 1.5435e-09 deg/d
Q 2.933938289586627 1.2909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2252  
   data-arc span      32581 days (89.20 yr)  
   first obs. used      1931-05-19  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:58:47  

Additional Information
 Earth MOID = 1.29463 au 
 Jupiter MOID = 2.17772 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456836.5 (2014-Jun-28.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .12357410697862 3.786e-08  
q 2.287165076103802 9.8345e-08 au
tp 2457221.762220609018
(2015-Jul-18.26222061)
7.8722e-05 TDB
node 100.9256972264232 1.8176e-05 deg
peri 133.2936465137172 2.5824e-05 deg
i 14.73394822771555 3.9964e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2252  
   data-arc span      32581 days (89.20 yr)  
   first obs. used      1931-05-19  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:58:47  

Additional Information
 Jupiter MOID = 2.17772 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.433403717314533E-15 -3.704436088095748E-15 -7.288181914681823E-13 -4.26069296032773E-15 -1.572052270582524E-13 -2.179346546590991E-15
q -3.704436088095748E-15 9.671815037706521E-15 1.822305433679188E-12 1.146035293221853E-14 3.847162327419078E-13 5.819009460327749E-15
tp -7.288181914681823E-13 1.822305433679188E-12 6.197221765124924E-9 2.316749354816605E-12 1.468218257553755E-9 4.831634939778886E-12
node -4.26069296032773E-15 1.146035293221853E-14 2.316749354816605E-12 3.303647185159207E-10 -3.188906631458792E-10 2.738853642111256E-12
peri -1.572052270582524E-13 3.847162327419078E-13 1.468218257553755E-9 -3.188906631458792E-10 6.668804737356076E-10 -1.562457436920498E-12
i -2.179346546590991E-15 5.819009460327749E-15 4.831634939778886E-12 2.738853642111256E-12 -1.562457436920498E-12 1.597150121872501E-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 11.8   n/a MPO384778  
diameter diameter 13.671 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 29.494 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Gross, J. (2003) Minor Planet Bull. 30, 44-46.]
geometric albedo albedo 0.216   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2988 Korhonen (1943 EM)          Discovered 1943-Mar-01 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1943 EM = 1931 KN = 1951 AS = 1953 TO3 = 1979 WM3 = 1979 YV6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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