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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 ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .12163110041342 3.1688e-08  
a 2.548586055446748 9.1034e-09 au
q 2.238598729024463 8.1471e-08 au
i 3.181661171750795 3.7799e-06 deg
node 236.130146701708 8.1156e-05 deg
peri 62.69905788174158 8.4307e-05 deg
M 13.34647464452008 2.1624e-05 deg
tp 2458945.405094099990
(2020-Apr-05.90509410)
8.9348e-05 TDB
period 1486.097763812658
4.07
7.9624e-06
2.18e-08
d
yr
n .2422451663451818 1.2979e-09 deg/d
Q 2.858573381869034 1.0211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1872  
   data-arc span      15090 days (41.31 yr)  
   first obs. used      1979-07-24  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:45:55  

Additional Information
 Earth MOID = 1.22505 au 
 Jupiter MOID = 2.32263 au 
 T_jup = 3.429 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457156.5 (2015-May-14.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208782050265821 3.1804e-08  
q 2.239952328960893 8.1789e-08 au
tp 2457461.599278700712
(2016-Mar-14.09927870)
9.2551e-05 TDB
node 236.1596482827619 8.1109e-05 deg
peri 63.19129608430686 8.4286e-05 deg
i 3.182402852483182 3.7823e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1872  
   data-arc span      15090 days (41.31 yr)  
   first obs. used      1979-07-24  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:45:55  

Additional Information
 Jupiter MOID = 2.32263 au 
 T_jup = 3.429 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.011478012595134E-15 -2.588694335827903E-15 1.400805704340546E-12 -1.737282415432409E-15 3.410187408839414E-13 -1.190434037613144E-15
q -2.588694335827903E-15 6.689418355301006E-15 -3.854710371642699E-12 2.118687102408512E-15 -9.413856598540011E-13 3.337026417586936E-15
tp 1.400805704340546E-12 -3.854710371642699E-12 8.5657190311607E-9 2.471171793274666E-11 2.147409182428902E-9 -5.571347945858098E-12
node -1.737282415432409E-15 2.118687102408512E-15 2.471171793274666E-11 6.57866647342013E-9 -6.562437453261662E-9 -1.514465522486317E-10
peri 3.410187408839414E-13 -9.413856598540011E-13 2.147409182428902E-9 -6.562437453261662E-9 7.104068310720544E-9 1.498382954388235E-10
i -1.190434037613144E-15 3.337026417586936E-15 -5.571347945858098E-12 -1.514465522486317E-10 1.498382954388235E-10 1.430591482619373E-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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