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16890 (1998 BJ33)
Classification: Main-belt Asteroid          SPK-ID: 2016890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .0308482350831806 2.0416e-08  
a 2.568699175013302 1.1957e-08 au
q 2.48945933900452 5.0374e-08 au
i 13.99739271952122 4.5185e-07 deg
node 307.1674670482774 2.734e-06 deg
peri 238.1784009916736 2.902e-05 deg
M 143.1628721974686 2.7707e-05 deg
tp 2458602.506865023859
(2019-Apr-29.00686502)
0.0001151 TDB
period 1503.724571091815
4.12
1.05e-05
2.875e-08
d
yr
n .2394055446860282 1.6716e-09 deg/d
Q 2.647939011022085 1.2326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2015  
   data-arc span      15645 days (42.83 yr)  
   first obs. used      1978-02-08  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41525  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:45:39  

Additional Information
 Earth MOID = 1.51979 au 
 Jupiter MOID = 2.41393 au 
 T_jup = 3.389 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02984112945183492 2.09e-08  
q 2.491020528349161 5.1741e-08 au
tp 2457088.197196535888
(2015-Mar-06.69719654)
0.00011274 TDB
node 307.2065070130245 2.7368e-06 deg
peri 235.5732319284861 2.868e-05 deg
i 13.99119187459273 4.512e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2015  
   data-arc span      15645 days (42.83 yr)  
   first obs. used      1978-02-08  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41525  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:45:39  

Additional Information
 Jupiter MOID = 2.41393 au 
 T_jup = 3.389 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.368271104375922E-16 -1.056749441359691E-15 -1.730880444461819E-12 5.307997673884301E-15 -4.520065919508392E-13 -1.796192843918819E-15
q -1.056749441359691E-15 2.677111873454292E-15 4.539346094924177E-12 -1.272536563554744E-14 1.183476886163002E-12 4.509575129423453E-15
tp -1.730880444461819E-12 4.539346094924177E-12 1.270929801041963E-8 3.025675709102523E-11 3.217575580553928E-9 1.58918312073232E-11
node 5.307997673884301E-15 -1.272536563554744E-14 3.025675709102523E-11 7.489931202568892E-12 1.29052793772417E-13 7.433639695443848E-13
peri -4.520065919508392E-13 1.183476886163002E-12 3.217575580553928E-9 1.29052793772417E-13 8.225237551581401E-10 3.272362508765742E-12
i -1.796192843918819E-15 4.509575129423453E-15 1.58918312073232E-11 7.433639695443848E-13 3.272362508765742E-12 2.035793450920025E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.16   n/a E2021B10  
diameter diameter 4.226 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 57.555 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.213   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

16890 (1998 BJ33)          Discovered 1998-Jan-29 by Kawasato, N. at Uenohara
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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