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325 Heidelberga (A892 EA)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000325
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 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1524415675580331 3.5835e-08  
a 3.221490431774989 1.6174e-08 au
q 2.730401380482005 1.1225e-07 au
i 8.567555072898292 3.697e-06 deg
node 344.2199737538691 2.8028e-05 deg
peri 70.00525620934832 3.1613e-05 deg
M 279.5852739928782 1.5635e-05 deg
tp 2459672.255292717301
(2022-Apr-02.75529272)
9.3673e-05 TDB
period 2111.950308245624
5.78
1.5905e-05
4.355e-08
d
yr
n .1704585560533612 1.2838e-09 deg/d
Q 3.712579483067973 1.864e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3653  
   data-arc span      47034 days (128.77 yr)  
   first obs. used      1892-03-04  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35063  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:42:26  

Additional Information
 Earth MOID = 1.75558 au 
 Jupiter MOID = 1.77769 au 
 T_jup = 3.153 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455617.5 (2011-Feb-25.0) TDB
Reference: JPL 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604221991820255 3.6631e-08  
q 2.693546481904733 1.1701e-07 au
tp 2455454.257587193993
(2010-Sep-14.75758719)
7.2524e-05 TDB
node 344.9252945305177 2.8165e-05 deg
peri 68.13041934423684 3.1172e-05 deg
i 8.559500400489139 3.698e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3653  
   data-arc span      47034 days (128.77 yr)  
   first obs. used      1892-03-04  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35063  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:42:26  

Additional Information
 Jupiter MOID = 1.77769 au 
 T_jup = 3.153 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.341832979104235E-15 -4.265638558984884E-15 -2.306301048803203E-13 1.048441242361358E-14 -5.308981839461211E-14 -2.156267160088847E-15
q -4.265638558984884E-15 1.369246102687977E-14 1.086760770699521E-12 -3.767900121410554E-14 2.353920936155895E-13 5.987565077979831E-15
tp -2.306301048803203E-13 1.086760770699521E-12 5.259757484127129E-9 -7.357313776051258E-12 9.950147131359858E-10 2.097929350926556E-12
node 1.048441242361358E-14 -3.767900121410554E-14 -7.357313776051258E-12 7.932752745553662E-10 -7.858086846693325E-10 1.243933148652891E-11
peri -5.308981839461211E-14 2.353920936155895E-13 9.950147131359858E-10 -7.858086846693325E-10 9.716730225031968E-10 -1.205734131058085E-11
i -2.156267160088847E-15 5.987565077979831E-15 2.097929350926556E-12 1.243933148652891E-11 -1.205734131058085E-11 1.367533025958303E-11

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 8.84   n/a E2021B10 IRAS observations used: 18
diameter diameter 75.72 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
rotation period rot_per 6.737 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.1068   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
B-V BV 0.714   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.99 deg.
U-B UB 0.268   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.99 deg.
Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

325 Heidelberga (A892 EA)          Discovered 1892-Mar-04 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
2009-Apr-21 23:19 < 00:01 Jupiter 1.85787126874569 1.85787081857463 1.85787171891675 3.71196255376327 3.5870385483485 2454943.471846293 0.22477125840328 61.583987676216 18.1680998337055 84.3440165135227 3273316.19839672 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2020-Jun-07 21:28 < 00:01 Jupiter 1.78316994814586 1.78316949704842 1.7831703992433 2.79876544617617 2.62356040445665 2459008.394245316 0.324539225802057 58.7240119033788 15.278237359976 78.3914332664748 2896999.36905448 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2031-Aug-02 15:44 < 00:01 Jupiter 1.77290740869093 1.77290693804659 1.77290787933517 2.02496019677195 1.77339949048907 2463081.155420177 0.573431069892286 53.5775609235558 28.0955125716003 61.41893695834 2465016.78911614 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2042-Sep-27 13:57 < 00:01 Jupiter 1.81191682340247 1.81191631978232 1.81191732702232 1.68264703111845 1.37708194396145 2467155.081186939 0.882854260109745 66.3187232040191 37.7716091515492 81.3820176276088 2669253.67813683 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2053-Nov-23 00:36 00:01 Jupiter 1.88120747940804 1.88120692282123 1.88120803599506 2.05198946148892 1.81938213360839 2471229.525241558 1.17926514880781 58.1187689094145 28.2206128812551 81.8181005437077 1965094.23565225 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2065-Jan-18 18:05 00:01 Jupiter 1.97880101296006 1.97880037880002 1.978801647121 2.83059533018876 2.67510246919721 2475304.253139779 1.43512504794263 93.6984128461496 15.6094905103999 82.6457679107658 2691975.36463913 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2175-Dec-04 14:08 00:03 Jupiter 1.87886124488932 1.87885997100074 1.87886251877939 4.04804300780762 3.93510079627475 2515800.088553159 3.10695218808315 123.337555693644 30.8761837094847 67.8267128364739 1997804.74851293 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2187-Jan-17 13:09 00:03 Jupiter 1.74973962894649 1.74973893904628 1.7497403188466 3.24413148209251 3.09131352315647 2519862.047829639 3.10555746769693 86.6009031026026 20.1324165505757 89.110898136719 1530871.80447959 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42
2198-Mar-19 19:40 00:03 Jupiter 1.71400059996268 1.71400011819618 1.71400108173006 2.5270908099684 2.32332319143515 2523941.319416032 3.24768396852725 143.870952376782 16.9406744685464 69.6768362941331 2341823.02179324 T 71 CATAB v2.0f-lin.ifort 2021-Apr-12 10:42:58 2021-Apr-12 10:42

Alternate Designations
 A892 EA = 1949 HQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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