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420 Bertholda (A896 RC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000420
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02960704518401135 3.5024e-08  
a 3.413318794743975 1.6089e-08 au
q 3.312260510960555 1.1684e-07 au
i 6.689400873109722 4.2426e-06 deg
node 242.6418830534602 3.5184e-05 deg
peri 235.4154946457672 8.7106e-05 deg
M 79.19033948925167 7.8047e-05 deg
tp 2458493.820411635452
(2019-Jan-10.32041164)
0.00050034 TDB
period 2303.369994214946
6.31
1.6286e-05
4.459e-08
d
yr
n .1562927366876194 1.1051e-09 deg/d
Q 3.514377078527395 1.6566e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      43881 days (120.14 yr)  
   first obs. used      1900-04-26  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:13:32  

Additional Information
 Earth MOID = 2.33479 au 
 Jupiter MOID = 1.5862 au 
 T_jup = 3.133 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455995.5 (2012-Mar-09.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .032236172042743 3.5092e-08  
q 3.305165445063547 1.1714e-07 au
tp 2456176.860189742512
(2012-Sep-06.36018974)
0.00046299 TDB
node 242.6747363715569 3.5171e-05 deg
peri 233.5587937868854 8.1071e-05 deg
i 6.689563191360242 4.2435e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      43881 days (120.14 yr)  
   first obs. used      1900-04-26  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:13:32  

Additional Information
 Jupiter MOID = 1.5862 au 
 T_jup = 3.133 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.231463720096257E-15 -4.077593029449314E-15 -1.346938195749277E-12 2.768830014403024E-15 -2.163809530979969E-13 1.867036763347123E-15
q -4.077593029449314E-15 1.372261804299959E-14 2.844062750360092E-12 6.94075179772572E-15 4.380803925608724E-13 -5.775384990666462E-15
tp -1.346938195749277E-12 2.844062750360092E-12 2.143560162125253E-7 -1.449852721622955E-10 3.385751898723368E-8 -9.311122961779067E-12
node 2.768830014403024E-15 6.94075179772572E-15 -1.449852721622955E-10 1.237002468922624E-9 -1.249174249879995E-9 -1.398678278112368E-11
peri -2.163809530979969E-13 4.380803925608724E-13 3.385751898723368E-8 -1.249174249879995E-9 6.572450185316526E-9 1.245123865596444E-11
i 1.867036763347123E-15 -5.775384990666462E-15 -9.311122961779067E-12 -1.398678278112368E-11 1.245123865596444E-11 1.800692913095292E-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 8.4   n/a MPO384747  
diameter diameter 138.699 km 3.446 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.04 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Zappala, V.; Di Martino, M.; Cellino, A.; Farinella, P.; et al. (1989) Icarus 82, 354-368.]
[Lagerkvist, C.-I.; Erikson, A.; Lahulla, F.; Di Martino, M.; et al. (2001) Icarus 149, 190-197.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.044   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.691   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.23, mean=5.51, max.=6.93) deg.
U-B UB 0.229   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.23, mean=5.51, max.=6.93) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

420 Bertholda (A896 RC)          Discovered 1896-Sep-07 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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