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538 Friederike (A904 OA)
Classification: Main-belt Asteroid          SPK-ID: 2000538
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 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17004594947526 3.8085e-08  
a 3.1578286234364 1.2063e-08 au
q 2.620852656884004 1.2266e-07 au
i 6.521811660278208 4.1093e-06 deg
node 141.159962307002 3.2999e-05 deg
peri 227.5039484368259 3.4547e-05 deg
M 161.253011576698 1.1494e-05 deg
tp 2458082.407169622418
(2017-Nov-24.90716962)
6.3353e-05 TDB
period 2049.657340996233
5.61
1.1744e-05
3.215e-08
d
yr
n .1756391143043561 1.0064e-09 deg/d
Q 3.694804589988796 1.4114e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3217  
   data-arc span      42336 days (115.91 yr)  
   first obs. used      1904-07-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42207  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:15:52  

Additional Information
 Earth MOID = 1.62511 au 
 Jupiter MOID = 1.78309 au 
 T_jup = 3.173 
[ 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 9.6   n/a MPO502158  
diameter diameter 70.640 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 46.728 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2013) Minor Planet Bull. 40, 85-87.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.065   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

538 Friederike (A904 OA)          Discovered 1904-Jul-18 by Gotz, P. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1970-Apr-29 21:35 < 00:01 Jupiter 1.90672181903186 1.9067213679629 1.90672227010093 2.29484617065469 2.09233350357011 2440706.399511827 0.876116561273792 55.8449024357729 4.44326128420629 -77.815069752088 3134963.02296222 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
1981-Jan-17 23:43 < 00:01 Jupiter 1.80648182019546 1.80648143439886 1.80648220599195 2.2420835926219 2.02217199792643 2444622.488346801 0.617641814049091 52.9361939930876 14.6247969245802 -78.6779906858145 2680634.01445658 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
1991-Oct-14 11:49 < 00:01 Jupiter 1.84346668774795 1.84346632346955 1.84346705202624 2.62199833530859 2.44047740810506 2448543.992415345 0.3984358630021 44.3416310296197 12.1197640864605 -85.2991178870358 3083159.64028165 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
2077-Aug-17 04:36 00:01 Jupiter 1.95477556880124 1.95477514444292 1.95477599315967 2.44770616242637 2.26376826844934 2479897.691894413 1.11441996136379 54.6544321317219 7.74545596959133 -81.8914014140827 3211857.12946036 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
2088-Apr-30 15:29 00:01 Jupiter 1.8313327061547 1.83133229341314 1.83133311889647 2.14045617612135 1.91220256111522 2483807.144847474 1.31604791949524 82.4882698813922 13.2241832365748 -81.4778405258639 2758675.02740339 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
2099-Jan-24 03:13 00:02 Jupiter 1.82550190785751 1.82550151604271 1.82550229967232 2.45285143315549 2.25576849738064 2487727.634362796 1.5351364100896 93.0839318752514 13.7585185479629 -87.9126774499982 2861329.1999583 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
2109-Oct-15 09:27 00:02 Jupiter 1.95202403091159 1.95202346831635 1.95202459350728 3.11882782916501 2.97644868485166 2491643.893912142 1.79602695648368 77.3373072163344 14.5300870026948 79.5577540689261 3503085.17314423 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
2184-Dec-03 05:45 00:03 Jupiter 1.99583075613529 1.99583000055031 1.99583151172026 2.73508935227301 2.57525180105616 2519086.739879109 3.09930716263893 63.0591905088882 10.2304454880084 -80.1472062985129 1790327.9755884 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
2195-Aug-13 06:40 00:03 Jupiter 1.86380668414449 1.86380606564188 1.86380730265039 2.09979401515284 1.87088700895117 2522991.777693724 3.28396886677971 169.204908212228 9.57710864129386 -85.0075148293529 2881654.6688572 T 50 CATAB v2.0f-lin.ifort 2020-Jun-23 15:16:07 2020-Jun-23 15:16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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