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6445 Bellmore (1990 FS1)
Classification: Main-belt Asteroid          SPK-ID: 2006445
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143199254276737 1.9873e-08  
a 2.626781941783277 9.79e-09 au
q 2.326488426083853 5.1571e-08 au
i 13.95360519229352 8.0245e-07 deg
node 125.639498395933 2.0373e-06 deg
peri 341.1417615823574 8.9706e-06 deg
M 139.6389727811757 8.1504e-06 deg
tp 2458597.331567060948
(2019-Apr-23.83156706)
3.3914e-05 TDB
period 1555.014560285643
4.26
8.6933e-06
2.38e-08
d
yr
n .2315090862775401 1.2942e-09 deg/d
Q 2.927075457482701 1.0909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2405  
   data-arc span      13969 days (38.25 yr)  
   first obs. used      1982-05-22  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:44:47  

Additional Information
 Earth MOID = 1.34668 au 
 Jupiter MOID = 2.18151 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457223.5 (2015-Jul-20.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150925594134995 1.9704e-08  
q 2.325507008955595 5.1121e-08 au
tp 2457044.840882511392
(2015-Jan-22.34088251)
3.212e-05 TDB
node 125.669047347195 2.0365e-06 deg
peri 341.7509190486248 8.982e-06 deg
i 13.9556173369162 8.0259e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2405  
   data-arc span      13969 days (38.25 yr)  
   first obs. used      1982-05-22  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:44:47  

Additional Information
 Jupiter MOID = 2.18151 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.88251260544304E-16 -9.928896600339416E-16 -4.981450496705866E-13 -5.233571925077729E-15 -1.37325173874859E-13 -1.348940741088526E-15
q -9.928896600339416E-16 2.613393947246204E-15 1.33081899839302E-12 1.361619198618268E-14 3.673673758153619E-13 3.587010096364376E-15
tp -4.981450496705866E-13 1.33081899839302E-12 1.031676020942623E-9 7.359605759553281E-12 2.801178460853315E-10 -1.836954023622523E-12
node -5.233571925077729E-15 1.361619198618268E-14 7.359605759553281E-12 4.147257282502985E-12 -2.063967323374578E-12 6.048395512219618E-13
peri -1.37325173874859E-13 3.673673758153619E-13 2.801178460853315E-10 -2.063967323374578E-12 8.067704103332282E-11 -1.028407537936051E-12
i -1.348940741088526E-15 3.587010096364376E-15 -1.836954023622523E-12 6.048395512219618E-13 -1.028407537936051E-12 6.441539273425807E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.75   n/a E2021B10  
diameter diameter 7.271 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.87835 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.366   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6445 Bellmore           Discovered 1990 Mar. 23 by E. F. Helin at Palomar.
Named in honor of Tamara Bell and Michael More on the occasion of their wedding. They are recent graduates of the University of Arizona with degrees in political science and geology. The discoverer and her husband wish the newlyweds a harmonious marriage and rewarding careers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19961026/MPCPages.arcLast Updated: 2003-09-26

Alternate Designations
 1990 FS1 = 1982 KP1 = 1985 DP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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