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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169652023307177 3.8879e-08  
a 3.15911790352731 1.2822e-08 au
q 2.623167159327974 1.2594e-07 au
i 6.520305064547223 4.1537e-06 deg
node 141.1585494556706 3.6312e-05 deg
peri 227.5960632414714 3.7994e-05 deg
M 90.93933287808652 1.1621e-05 deg
tp 2458082.420459075481
(2017-Nov-24.92045908)
6.5334e-05 TDB
period 2050.91272203262
5.62
1.2487e-05
3.419e-08
d
yr
n .1755316041158548 1.0687e-09 deg/d
Q 3.695068647726645 1.4998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2757  
   data-arc span      42133 days (115.35 yr)  
   first obs. used      1904-07-20  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45343  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:08:49  

Additional Information
 Earth MOID = 1.62662 au 
 Jupiter MOID = 1.77946 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 9.5   n/a MPO259336  
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-January); 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 1.90672193430696 1.90672146937429 1.90672239923975 2.29484684633487 2.09233425748381 2440706.399576419 0.890518342904629 58.9552931324825 4.96487745477062 -77.6000637160016 2962361.59384935 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
1981-Jan-17 23:43 < 00:01 Jupiter 1.80648182025484 1.80648142847316 1.80648221203653 2.2420836410539 2.02217205163304 2444622.488407794 0.624577069326454 56.2310888058348 14.6649389297795 -78.4242606361667 2656539.19234928 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
1991-Oct-14 11:49 < 00:01 Jupiter 1.84346657351083 1.84346620424492 1.84346694277674 2.62199774933957 2.44047676688514 2448543.992468918 0.399604553563099 47.1830505055725 12.5376685033942 -86.3568401168918 3045552.33520122 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
2077-Aug-17 04:36 00:01 Jupiter 1.95477569176717 1.95477520548803 1.95477617804632 2.44770685175458 2.26376902582826 2479897.691898957 1.17389689452906 57.7468954804162 7.9642787334894 -81.5457926836265 2797648.82069914 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
2088-Apr-30 15:29 00:01 Jupiter 1.83133273189628 1.83133229358763 1.83133317020524 2.14045648691796 1.91220291241051 2483807.144862336 1.38202585898886 88.3956399444839 13.8558469668316 -81.1000647740329 2695946.83208395 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
2099-Jan-24 03:14 00:02 Jupiter 1.82550182933319 1.82550142811228 1.82550223055411 2.45285111437169 2.25576814189729 2487727.634376163 1.60901869566393 99.0188009955625 13.9256158630333 -88.1640116816483 2838829.37347059 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
2109-Oct-15 09:27 00:02 Jupiter 1.9520238903735 1.95202326056301 1.95202452018454 3.11882701590768 2.97644782219604 2491643.893909263 1.88072271634482 81.0087263794001 15.854284717271 78.3803370649608 3177023.88725485 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
2184-Dec-03 05:45 00:03 Jupiter 1.99583088605538 1.99583004774635 1.99583172436441 2.73508992828512 2.5752524235471 2519086.739835893 3.22747693548461 64.9595050029163 11.603665505556 -79.7824487357773 1609746.36188936 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
2195-Aug-13 06:40 00:03 Jupiter 1.86380673225966 1.86380605932157 1.86380740520157 2.0997944859114 1.87088754357889 2522991.777648773 3.41964748258331 176.90720276099 10.6160018883954 -84.9606771819991 2734771.52960022 T 45 CATAB v2.0f-lin.ifort 2019-Dec-03 20:09:01 2019-Dec-03 20:09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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