Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
3844 Lujiaxi (1966 BZ)
Classification: Main-belt Asteroid          SPK-ID: 2003844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045093163407503 2.5005e-08  
a 2.731668029238478 1.0025e-08 au
q 2.44618327103288 6.7563e-08 au
i 3.830629803901441 1.2316e-06 deg
node 137.9657334866116 1.1546e-05 deg
peri 230.1960539285803 1.4378e-05 deg
M 177.7171313618852 1.0835e-05 deg
tp 2458386.419971978295
(2018-Sep-24.91997198)
4.7627e-05 TDB
period 1649.074615609443
4.51
9.0775e-06
2.485e-08
d
yr
n .2183042517254176 1.2017e-09 deg/d
Q 3.017152787444076 1.1072e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3156  
   data-arc span      31875 days (87.27 yr)  
   first obs. used      1933-12-15  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41629  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:14:50  

Additional Information
 Earth MOID = 1.44539 au 
 Jupiter MOID = 2.4415 au 
 T_jup = 3.343 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457077.5 (2015-Feb-24.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1025922600810611 2.474e-08  
q 2.45193391794818 6.6714e-08 au
tp 2456729.398425007979
(2014-Mar-12.89842501)
4.5863e-05 TDB
node 138.0223665023647 1.1526e-05 deg
peri 228.8569603866989 1.4519e-05 deg
i 3.831586542580278 1.2331e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3156  
   data-arc span      31875 days (87.27 yr)  
   first obs. used      1933-12-15  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41629  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:14:50  

Additional Information
 Jupiter MOID = 2.4415 au 
 T_jup = 3.343 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.120644191210294E-16 -1.635790437101245E-15 7.26288110432482E-13 4.775854425023733E-15 1.011807509870385E-13 -4.989270795266953E-15
q -1.635790437101245E-15 4.45081979575494E-15 -1.880525991124957E-12 -1.192978679433295E-14 -2.543216412053241E-13 1.33791342030526E-14
tp 7.26288110432482E-13 -1.880525991124957E-12 2.103457428337573E-9 3.881564216963848E-13 3.821150133972364E-10 1.297912483742689E-11
node 4.775854425023733E-15 -1.192978679433295E-14 3.881564216963848E-13 1.328406849967101E-10 -1.356573196864336E-10 -5.103321772823957E-13
peri 1.011807509870385E-13 -2.543216412053241E-13 3.821150133972364E-10 -1.356573196864336E-10 2.108073453977355E-10 3.561198700187328E-12
i -4.989270795266953E-15 1.33791342030526E-14 1.297912483742689E-11 -5.103321772823957E-13 3.561198700187328E-12 1.520545568863311E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-20 21:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin