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18616 (1998 DR5)
Classification: Main-belt Asteroid          SPK-ID: 2018616
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751466380847483 2.5346e-08  
a 2.625934480342147 1.2929e-08 au
q 2.166010884279399 6.9226e-08 au
i 14.769725940154 1.4825e-06 deg
node 309.9958833279699 3.4783e-06 deg
peri 320.7318262584341 1.1397e-05 deg
M 34.69149215643238 7.5536e-06 deg
tp 2459050.723135363602
(2020-Jul-20.22313536)
3.2601e-05 TDB
period 1554.262094751256
4.26
1.1479e-05
3.143e-08
d
yr
n .2316211668647908 1.7106e-09 deg/d
Q 3.085858076404895 1.5194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1964  
   data-arc span      9233 days (25.28 yr)  
   first obs. used      1995-08-25  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45046  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:33:22  

Additional Information
 Earth MOID = 1.16742 au 
 Jupiter MOID = 2.16048 au 
 T_jup = 3.334 
[ 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 13.1   n/a MPO474012  
diameter diameter 12.950 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18616 (1998 DR5)          Discovered 1998-Feb-22 by JPL/GEODSS NEAT at Haleakala
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 DR5 = 1995 QP7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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