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548 Kressida (A904 TF)
Classification: Main-belt Asteroid          SPK-ID: 2000548
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1848755575474808 7.058e-09  
a 2.282785668562162 4.7989e-09 au
q 1.860754395325333 1.567e-08 au
i 3.872583758281055 4.9607e-07 deg
node 108.4220949955038 1.5438e-05 deg
peri 320.1458498483942 1.5285e-05 deg
M 225.8838284399881 6.1034e-06 deg
tp 2459669.826179022786
(2022-Mar-31.32617902)
2.1998e-05 TDB
period 1259.784129556672
3.45
3.9725e-06
1.088e-08
d
yr
n .2857632443160614 9.0111e-10 deg/d
Q 2.70481694179899 5.6861e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2995  
   data-arc span      42363 days (115.98 yr)  
   first obs. used      1904-10-15  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41764  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:03:54  

Additional Information
 Earth MOID = .876427 au 
 Jupiter MOID = 2.58367 au 
 T_jup = 3.578 
[ 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 11.3   n/a MPO473769  
diameter diameter 14.008 km 1.939 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 11.9404 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:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.282   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.882   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.67 deg.
U-B UB 0.489   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.67 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

548 Kressida (A904 TF)          Discovered 1904-Oct-14 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
1982-Jul-12 23:58 < 00:01 Ceres 0.0488216776031743 0.0488211584468351 0.0488221967595241 2.95331545984448 2.95331252983285 2445163.498429622 0.745937908018252 62.4474394264909 25.478588897408 -89.9179128851317 282354.444599027 T 34 CATAB v2.0f-lin.ifort 2021-Apr-12 11:04:53 2021-Apr-12 11:04
2198-Dec-06 03:45 < 00:01 Pallas 0.0394440430751239 0.0394330393214601 0.0394550469841261 11.6156024662015 11.6156022575664 2524202.656345250 0.399745424416418 562.22260376093 19.9493142451317 -12.6939414726975 65759.243725617 T 34 CATAB v2.0f-lin.ifort 2021-Apr-12 11:04:53 2021-Apr-12 11:04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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