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JPL Small-Body Database Browser
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458 Hercynia (A900 SD)
Classification: Main-belt Asteroid          SPK-ID: 2000458
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 82 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2419427053034912 3.2856e-08  
a 2.993537310586944 9.1289e-09 au
q 2.269272795236601 1.0053e-07 au
i 12.65409846947091 3.5687e-06 deg
node 134.1375634350912 1.7503e-05 deg
peri 277.176663171582 1.9046e-05 deg
M 8.388083520894799 8.5122e-06 deg
tp 2458956.420598880760
(2020-Apr-16.92059888)
4.4622e-05 TDB
period 1891.800953507153
5.18
8.6536e-06
2.369e-08
d
yr
n .1902948612710057 8.7046e-10 deg/d
Q 3.717801825937287 1.1338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      43599 days (119.37 yr)  
   first obs. used      1900-09-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42685  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:50  

Additional Information
 Earth MOID = 1.32155 au 
 Jupiter MOID = 1.86647 au 
 T_jup = 3.174 
[ 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 MPO502157 IRAS observations used: 8
diameter diameter 36.698 km 0.408 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 21.806 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Aznar Macias, A.; Carreno Garcerain, A.; Arce Masego, E.; Brines Rodriques, P.; et al. (2016) Minor Planet Bull. 43, 257-263.]
[Devogele, M.; Tanga, P.; Bendjoya, P.; Rivet, J.P.; et al. (2017) ArXiv:1707.07503.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.191   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.885   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.21 deg.
U-B UB 0.471   0.051 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.21 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B L   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

458 Hercynia (A900 SD)          Discovered 1900-Sep-21 by Wolf, M. and Schwassmann, A. 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
1925-Jul-13 15:42 00:01 Jupiter 1.99385925356668 1.99385862512837 1.99385988200691 3.67600590775867 3.55856547406183 2424345.154087414 1.23796481264402 132.123869858507 15.7961977535135 82.0227501545048 2776399.02010325 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28
1971-Mar-27 03:05 < 00:01 Jupiter 1.89212367117009 1.89212319459342 1.89212414774634 1.04342767931255 0.439803599537308 2441037.628448438 0.725135519250472 2512.47998212885 368.781055089161 10.3695003386555 1805616.2613144 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28
2008-Mar-27 13:02 < 00:01 Jupiter 1.9200183108583 1.92001790275171 1.92001871896489 3.13743612080889 2.99352613250618 2454553.042809580 0.210222164892805 62.3959535823285 15.7373967647766 83.153097044354 2832575.64578257 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28
2053-Nov-22 16:38 < 00:01 Jupiter 1.92728869575835 1.92728823013391 1.9272891615664 0.943637521942787 0.107114079424446 2471229.193365572 0.739614749900777 99921.2573001471 3552.476991924 6.04025332971181 5573964.19503632 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28
2090-Dec-08 18:18 00:01 Jupiter 1.86972807956752 1.86972764965465 1.86972850948059 2.65583162759293 2.47939578350893 2484759.262282942 1.17459221289433 117.212171061232 23.3298032507432 -87.73494015956 1835459.37948334 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28
2136-Jul-21 22:53 00:02 Jupiter 1.98321907943095 1.98321842339218 1.98321973546904 1.24384672253005 0.832445259321111 2501420.453658378 2.06725521605486 748.964635452524 100.54857156045 -18.8997505372225 1547579.63513482 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28
2173-Aug-19 18:16 00:02 Jupiter 1.84995185601928 1.84995142667877 1.84995228535978 2.21778324384834 2.00070954139117 2514963.261196981 2.44832650323666 183.747125923866 55.2540146848588 -71.4291469489094 1206673.88903214 T 82 CATAB v2.0f-lin.ifort 2020-Feb-22 15:28:03 2020-Feb-22 15:28

Alternate Designations
 A900 SD = 1947 XB = 2016 FW5 = A902 CA = A915 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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