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18396 Nellysachs (1992 SN2)
Classification: Main-belt Asteroid          SPK-ID: 2018396
[ 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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861776207052099 2.9288e-08  
a 2.389504735135298 7.9111e-09 au
q 1.944632428883975 7.0665e-08 au
i 2.973143527263531 3.8986e-06 deg
node 126.4974172739504 8.1028e-05 deg
peri 298.148648941262 8.2018e-05 deg
M 131.7819298241052 1.3022e-05 deg
tp 2458506.628878118776
(2019-Jan-23.12887812)		 4.7896e-05 TDB
period 1349.150100583208
3.69		 6.7001e-06
1.834e-08		 d
yr
n .2668346537901008 1.3251e-09 deg/d
Q 2.83437704138662 9.384e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1576  
   data-arc span      10125 days (27.72 yr)  
   first obs. used      1992-09-21  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:15:14  

Additional Information
 Earth MOID = .960267 au 
 Jupiter MOID = 2.47657 au 
 T_jup = 3.507 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456893.5 (2014-Aug-24.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1849075130003957 2.917e-08  
q 1.948567501904473 7.0287e-08 au
tp 2457157.073555795572
(2015-May-14.57355580)		 4.6638e-05 TDB
node 126.5318653129569 8.0978e-05 deg
peri 298.2281479212557 8.1987e-05 deg
i 2.973283349444586 3.8996e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1576  
   data-arc span      10125 days (27.72 yr)  
   first obs. used      1992-09-21  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:15:14  

Additional Information
 Jupiter MOID = 2.47657 au 
 T_jup = 3.507 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.509162040899232E-16 -2.041689092100799E-15 -4.094082559499004E-13 -3.635388376900919E-15 -1.192736547005623E-13 -4.795020334706109E-16
q -2.041689092100799E-15 4.94024604187507E-15 1.037429438754054E-12 9.900583988827961E-15 2.966702370989499E-13 1.244184938290552E-15
tp -4.094082559499004E-13 1.037429438754054E-12 2.175063513894601E-9 1.662463137797936E-12 6.169914138197723E-10 5.715852646714136E-13
node -3.635388376900919E-15 9.900583988827961E-15 1.662463137797936E-12 6.557473210464218E-9 -6.547856198198797E-9 1.306126851888444E-10
peri -1.192736547005623E-13 2.966702370989499E-13 6.169914138197723E-10 -6.547856198198797E-9 6.721857774216892E-9 -1.302847970089856E-10
i -4.795020334706109E-16 1.244184938290552E-15 5.715852646714136E-13 1.306126851888444E-10 -1.302847970089856E-10 1.520667678431572E-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 14.8   n/a MPO467908  

18396 Nellysachs           Discovered 1992 Sept. 21 by F. Borngen and L. D. Schmadel at Tautenburg.
Lyric poet Nelly Sachs (1891-1970), coming from a Jewish family in Berlin, escaped abroad in 1940 and became a Swedish citizen. In her work she grappled with the fate of the Jewish people. She shared the Nobel prize for literature in 1965. The name was suggested by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1992 SN2 = 1998 HX84 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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