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JPL Small-Body Database Browser
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532 Herculina (A904 HE)
Classification: Main-belt Asteroid          SPK-ID: 2000532
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 105 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757798032849678 2.7357e-08  
a 2.774642779252046 4.9135e-09 au
q 2.286916617329065 7.6094e-08 au
i 16.3159516776264 3.1232e-06 deg
node 107.5298660010208 1.1145e-05 deg
peri 76.50307804975503 1.4502e-05 deg
M 69.38906239783002 1.126e-05 deg
tp 2458675.114974682809
(2019-Jul-10.61497468)
5.2446e-05 TDB
period 1688.142267186075
4.62
4.4842e-06
1.228e-08
d
yr
n .2132521689656379 5.6646e-10 deg/d
Q 3.262368941175027 5.7772e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3572  
   data-arc span      42020 days (115.04 yr)  
   first obs. used      1904-04-20  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44413  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:09:11  

Additional Information
 Earth MOID = 1.35461 au 
 Jupiter MOID = 1.96274 au 
 T_jup = 3.255 
[ 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 5.9   n/a MPO492755 IRAS observations used: 16
magnitude slope G 0.26   n/a PDS3 (MPC 17259) Fit
diameter diameter 167.791 km 0.890 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.405 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, Y.C.; Chang, C.-s. (1963) Acta Astron. Sin. 11, 139-149.]
[Harris, A.W.; Young, J. (1979) Icarus 38, 100-105.]
[Taylor, R.C.; Birch, P.V.; Drummond, J.; Pospieszalska-Surdej, A.; Surdej, J. (1987) Icarus 69, 354-369.]
[Kwiatkowski, T, Michalowski, T. (1992) In Asteroids, Comets, Meteors 1991 (A.W. Harris, E. Bowell, Eds.), pp 333-336, Lunar and Planetary Institute.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Michalowski, T.; Velichko, F.P.; Di Martino, M.; Krugly, et al. (1995) Icarus 118, 292-301.]
[Szabo, Gy.; Sarneczky, K.; Kiss, L.L. (1999) in Proc. IAU Coll. 173, Evolution and Source Regions of Asteroids and Comets, 185-188.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.285   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.857   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=15; phase (min.=4.26, mean=11.48, max.=21.07) deg.
U-B UB 0.429   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=10; phase (min.=4.04, mean=11.15, max.=21.07) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

532 Herculina (A904 HE)          Discovered 1904-Apr-20 by Wolf, M. 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
1915-Apr-06 04:02 < 00:01 Jupiter 1.95538737652622 1.95538701770092 1.95538773535151 3.22507428326325 3.08784011869001 2420593.667905517 0.748847097492725 77.1594795216784 14.8551387819621 83.9775052509181 2854066.86871401 T 105 CATAB v2.0e-lin.ifort 2019-May-29 19:09:25 2019-May-29 19:09
1998-May-20 12:36 < 00:01 Jupiter 1.96232273857074 1.9623223809561 1.9623230961855 3.0084911833131 2.86142159860843 2450954.024935628 0.156956931611464 39.4270821409478 14.7145086852733 74.9413704749747 3579914.05930261 T 105 CATAB v2.0e-lin.ifort 2019-May-29 19:09:25 2019-May-29 19:09
2081-Jul-06 04:56 < 00:01 Jupiter 1.96452697493173 1.96452660956155 1.96452734030202 2.74461987714558 2.58275458720265 2481316.705852386 0.730861828330102 65.1154941449819 17.6801230064132 75.7561173840746 2321291.58602174 T 105 CATAB v2.0e-lin.ifort 2019-May-29 19:09:25 2019-May-29 19:09
2164-Aug-23 13:04 00:02 Jupiter 1.97590354692095 1.97590317393497 1.97590391990693 2.48417355711206 2.30516076963527 2511680.044597382 1.50197138960957 104.052259653862 22.8540785925828 66.8595537482244 1763624.16779052 T 105 CATAB v2.0e-lin.ifort 2019-May-29 19:09:25 2019-May-29 19:09

Alternate Designations
 A904 HE = 1950 JP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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