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22678 (1998 QB42)
Classification: Main-belt Asteroid          SPK-ID: 2022678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08988525906981945 5.7698e-08  
a 3.168063803059084 2.5666e-08 au
q 2.8833015673714 1.9653e-07 au
i 8.9835622711157 5.4051e-06 deg
node 3.790243617622853 2.5338e-05 deg
peri 322.5404917082196 3.6117e-05 deg
M 357.0005179812539 2.4073e-05 deg
tp 2459217.660623696323
(2021-Jan-03.16062370)
0.00013772 TDB
period 2059.630460214933
5.64
2.5029e-05
6.853e-08
d
yr
n .1747886365801913 2.124e-09 deg/d
Q 3.452826038746767 2.7972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      838  
   data-arc span      14259 days (39.04 yr)  
   first obs. used      1981-09-01  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54195  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:09:13  

Additional Information
 Earth MOID = 1.8769 au 
 Jupiter MOID = 1.93694 au 
 T_jup = 3.178 
[ show covariance matrix ]

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 14.26   n/a E2021B10  
diameter diameter 6.931 km 1.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 21.801 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 0.084   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

22678 (1998 QB42)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QB42 = 1981 RQ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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