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11422 Alilienthal (1999 LD7)
Classification: Main-belt Asteroid          SPK-ID: 2011422
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216310994996848 3.175e-08  
a 2.54858605585391 9.1427e-09 au
q 2.238598731710834 8.1677e-08 au
i 3.181660965783835 3.7953e-06 deg
node 236.1301436864153 8.1322e-05 deg
peri 62.69906111426069 8.4468e-05 deg
M 13.34647420465297 2.164e-05 deg
tp 2458945.405095902580
(2020-Apr-05.90509590)
8.9415e-05 TDB
period 1486.097764168786
4.07
7.9967e-06
2.189e-08
d
yr
n .2422451662871303 1.3035e-09 deg/d
Q 2.858573379996986 1.0255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1847  
   data-arc span      15075 days (41.27 yr)  
   first obs. used      1979-07-24  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49981  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:59:40  

Additional Information
 Earth MOID = 1.22505 au 
 Jupiter MOID = 2.32263 au 
 T_jup = 3.429 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457112.5 (2015-Mar-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208530915402208 3.1863e-08  
q 2.240035908227769 8.1967e-08 au
tp 2457461.589131660380
(2016-Mar-14.08913166)
9.2615e-05 TDB
node 236.1599693322325 8.1275e-05 deg
peri 63.18454142009229 8.4449e-05 deg
i 3.182374090851512 3.7977e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1847  
   data-arc span      15075 days (41.27 yr)  
   first obs. used      1979-07-24  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49981  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:59:40  

Additional Information
 Jupiter MOID = 2.32263 au 
 T_jup = 3.429 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.015219537055327E-15 -2.599091335283778E-15 1.394900531931946E-12 -1.910172645333151E-15 3.402672710106013E-13 -1.197434284930244E-15
q -2.599091335283778E-15 6.718649257650255E-15 -3.837631917424935E-12 2.49385814441749E-15 -9.391596945858937E-13 3.354522167439452E-15
tp 1.394900531931946E-12 -3.837631917424935E-12 8.577577302979862E-9 2.434196310004199E-11 2.149878810549426E-9 -5.608239728830488E-12
node -1.910172645333151E-15 2.49385814441749E-15 2.434196310004199E-11 6.605657519001498E-9 -6.58947497467221E-9 -1.496820332913546E-10
peri 3.402672710106013E-13 -9.391596945858937E-13 2.149878810549426E-9 -6.58947497467221E-9 7.131555146833696E-9 1.480681524277811E-10
i -1.197434284930244E-15 3.354522167439452E-15 -5.608239728830488E-12 -1.496820332913546E-10 1.480681524277811E-10 1.442230966004697E-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 14.2   n/a MPO473921  
diameter diameter 3.863 km 0.625 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.297   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11422 Alilienthal           Discovered 1999 June 10 by Spacewatch at Kitt Peak.
Alfred Lilienthal (1889-1970) studied in England and was a businessman in Berlin during the 1930s. He spent the 1940s in Shanghai.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020526/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1999 LD7 = 1979 OQ = 1996 TK47 = 1999 JA119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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