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55860 (1997 BQ6)
Classification: Main-belt Asteroid          SPK-ID: 2055860
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212748286424119 3.9184e-08  
a 3.19701380654301 2.13e-08 au
q 2.809296504987082 1.2164e-07 au
i .9045936416151377 4.8167e-06 deg
node 57.8709854465846 0.00026758 deg
peri 98.26108156034968 0.00026831 deg
M 82.17150643854174 1.9158e-05 deg
tp 2458919.922052302074
(2020-Mar-11.42205230)
0.00011051 TDB
period 2087.926443207825
5.72
2.0866e-05
5.713e-08
d
yr
n .1724198671706591 1.7231e-09 deg/d
Q 3.584731108098939 2.3883e-08 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      10661 days (29.19 yr)  
   first obs. used      1992-05-01  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:57:56  

Additional Information
 Earth MOID = 1.81992 au 
 Jupiter MOID = 1.40025 au 
 T_jup = 3.183 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457367.5 (2015-Dec-11.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1229449410916964 3.9153e-08  
q 2.803972591922851 1.2175e-07 au
tp 2456829.826161181655
(2014-Jun-21.32616118)
0.00010869 TDB
node 57.86338031359301 0.00026744 deg
peri 98.17318448786811 0.00026815 deg
i .9050218797403621 4.8175e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      10661 days (29.19 yr)  
   first obs. used      1992-05-01  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:57:56  

Additional Information
 Jupiter MOID = 1.40025 au 
 T_jup = 3.183 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.532970963886272E-15 -4.714216072756888E-15 8.232980421132641E-13 4.448533083039013E-15 1.439177953488239E-13 -1.151683048969665E-16
q -4.714216072756888E-15 1.482215502873648E-14 -2.802263431729448E-12 -8.959227434554483E-15 -4.778823257940859E-13 4.101650174583348E-16
tp 8.232980421132641E-13 -2.802263431729448E-12 1.181332046520126E-8 -1.278181072016675E-11 2.142830724689947E-9 -1.267713768735824E-14
node 4.448533083039013E-15 -8.959227434554483E-15 -1.278181072016675E-11 7.152507029286032E-8 -7.151766573302805E-8 -2.851398493325525E-10
peri 1.439177953488239E-13 -4.778823257940859E-13 2.142830724689947E-9 -7.151766573302805E-8 7.190539408387522E-8 2.851081578104163E-10
i -1.151683048969665E-16 4.101650174583348E-16 -1.267713768735824E-14 -2.851398493325525E-10 2.851081578104163E-10 2.320807354950732E-11

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 15.20   n/a E2021B10  
diameter diameter 5.571 km 0.886 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.85 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.039   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

55860 (1997 BQ6)          Discovered 1997-Jan-31 by Sarounova, L. at Ondrejov
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

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