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JPL Small-Body Database Browser
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17821 Bolsche (1998 FC127)
Classification: Main-belt Asteroid          SPK-ID: 2017821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09330759592204164 3.5305e-08  
a 2.3135108111574 1.0092e-08 au
q 2.097642679228651 8.3738e-08 au
i 7.292734859120554 4.3014e-06 deg
node 58.31236097113022 3.5597e-05 deg
peri 220.5489399854848 4.4963e-05 deg
M 272.5408259511272 2.8813e-05 deg
tp 2458912.754422243468
(2020-Mar-04.25442224)
0.00010317 TDB
period 1285.303608570922
3.52
8.4104e-06
2.303e-08
d
yr
n .280089464932157 1.8328e-09 deg/d
Q 2.52937894308615 1.1034e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1225  
   data-arc span      24572 days (67.27 yr)  
   first obs. used      1952-01-30  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:33:11  

Additional Information
 Earth MOID = 1.08687 au 
 Jupiter MOID = 2.55385 au 
 T_jup = 3.566 
[ 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 15.2   n/a MPO435865  
rotation period rot_per 5.934 h n/a LCDB (Rev. 2019-January); 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.]

17821 Bölsche           Discovered 1998 Mar. 31 by A. Knöfel and J. Kandler at Drebach.
Wilhelm Bölsche (1861-1939) was a naturalist, poet and writer. With his book Das Liebesleben in der Natur, he is considered the father of modern popular-science books in Germany. Bölsche, a protagonist of Darwinism, wrote popular biographies on Darwin and Haeckel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1998 FC127 = 1998 HQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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