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18181 (2000 QD34)
Classification: Mars-crossing Asteroid          SPK-ID: 2018181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2956980770049078 1.8106e-08  
a 2.339779501778201 6.7329e-09 au
q 1.647911202486886 4.373e-08 au
i 21.187831961873 6.5295e-07 deg
node 330.4031883977675 1.8734e-06 deg
peri 251.9386303911181 1.9196e-06 deg
M 312.6497479370983 3.5923e-06 deg
tp 2459372.441463600909
(2021-Jun-06.94146360)
1.3571e-05 TDB
period 1307.256544571262
3.58
5.6426e-06
1.545e-08
d
yr
n .2753858846566865 1.1887e-09 deg/d
Q 3.031647801069516 8.7239e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2068  
   data-arc span      15717 days (43.03 yr)  
   first obs. used      1978-03-05  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41024  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:24:46  

Additional Information
 Earth MOID = .764644 au 
 Jupiter MOID = 2.31197 au 
 T_jup = 3.418 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.29   n/a E2021B10  
diameter diameter 4.558 km 0.708 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 5.180 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2010) Minor Planet Bull. 37, 112-118.]
geometric albedo albedo 0.426   0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

18181 (2000 QD34)          Discovered 2000-Aug-26 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 QD34 = 1978 EC7 = 1993 QV5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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