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3844 Lujiaxi (1966 BZ)
Classification: Main-belt Asteroid          SPK-ID: 2003844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104727774260116 2.3508e-08  
a 2.731124970464506 9.5125e-09 au
q 2.445100331081534 6.4371e-08 au
i 3.830708229713046 1.2026e-06 deg
node 137.9678570842063 1.1526e-05 deg
peri 230.2136956442307 1.433e-05 deg
M 220.4949016505267 1.0597e-05 deg
tp 2460035.349214578644
(2023-Mar-31.84921458)
5.0153e-05 TDB
period 1648.582883130022
4.51
8.613e-06
2.358e-08
d
yr
n .2183693666141304 1.1409e-09 deg/d
Q 3.017149609847479 1.0509e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3400  
   data-arc span      31971 days (87.53 yr)  
   first obs. used      1933-12-15  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:45:13  

Additional Information
 Earth MOID = 1.44506 au 
 Jupiter MOID = 2.44189 au 
 T_jup = 3.343 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457364.5 (2015-Dec-08.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1024687047749551 2.3326e-08  
q 2.454478487453871 6.3756e-08 au
tp 2456731.416587557721
(2014-Mar-14.91658756)
4.4878e-05 TDB
node 138.0205109650637 1.1502e-05 deg
peri 229.4069043673465 1.4447e-05 deg
i 3.831619481033671 1.2036e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3400  
   data-arc span      31971 days (87.53 yr)  
   first obs. used      1933-12-15  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:45:13  

Additional Information
 Jupiter MOID = 2.44189 au 
 T_jup = 3.343 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.441059377712989E-16 -1.473717930119543E-15 6.573502426737458E-13 -6.370462753742692E-17 9.613474034381492E-14 -3.598757889321842E-15
q -1.473717930119543E-15 4.064843075285268E-15 -1.715599239993564E-12 -2.039032778065891E-16 -2.423155939533324E-13 9.951061324629242E-15
tp 6.573502426737458E-13 -1.715599239993564E-12 2.014028753000667E-9 -3.002654947847576E-12 3.713792221434594E-10 1.372652221237751E-11
node -6.370462753742692E-17 -2.039032778065891E-16 -3.002654947847576E-12 1.323057645480007E-10 -1.354935782937839E-10 -3.214572994649E-13
peri 9.613474034381492E-14 -2.423155939533324E-13 3.713792221434594E-10 -1.354935782937839E-10 2.087156323161783E-10 3.430757661108842E-12
i -3.598757889321842E-15 9.951061324629242E-15 1.372652221237751E-11 -3.214572994649E-13 3.430757661108842E-12 1.448711879883962E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.85   n/a E2021B10  
diameter diameter 15.538 km 0.718 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.33 h n/a LCDB (Rev. 2020-October); 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:
[Devogele, M.; Tanga, P.; Bendjoya, P.; Rivet, J.P.; et al. (2017) ArXiv:1707.07503.]
geometric albedo albedo 0.168   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B L   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)

3844 Lujiaxi           Discovered 1966 Jan. 30 at the Purple Mountain Observatory.
Lu Jia-xi (1915-2001), known for his creative work in physical chemistry, structural chemistry and crystal material sciences, made outstanding contributions to the structural chemistry of cluster compounds.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1966 BZ = 1933 XH = 1964 VC1 = 1975 BW = 1977 RW3 = 1977 SP = 1980 FY10 = 1982 VJ9 = 1985 HD1 = 1985 JV = 1985 KK = 1986 PU = 1986 QA = 1987 YQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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