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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1535897231689551 3.7027e-08  
a 3.224122756928031 1.5135e-08 au
q 2.728930635228727 1.1676e-07 au
i 8.548029031111641 3.731e-06 deg
node 344.3566878329908 2.8593e-05 deg
peri 69.49692605147224 3.2008e-05 deg
M 246.0539976689539 1.5304e-05 deg
tp 2459669.786974033540
(2022-Mar-31.28697403)		 9.2763e-05 TDB
period 2114.539393423075
5.79		 1.4889e-05
4.076e-08		 d
yr
n .170249843119367 1.1988e-09 deg/d
Q 3.719314878627336 1.7459e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3514  
   data-arc span      46952 days (128.55 yr)  
   first obs. used      1892-03-04  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35658  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:25:42  

Additional Information
 Earth MOID = 1.75466 au 
 Jupiter MOID = 1.77455 au 
 T_jup = 3.152 
[ 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 8.7   n/a MPO492752 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. 2019-August); 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]
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

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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 1.85787128509421 1.857870830299 1.85787173988941 3.71196311203771 3.58703912648197 2454943.471861925 0.231574698678382 62.65945363929 18.3069380732146 84.2756505370765 3240992.65502941 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2020-Jun-07 21:28 < 00:01 Jupiter 1.78316998788408 1.78316953305511 1.78317044271305 2.7987660812845 2.62356108501303 2459008.394291172 0.33978258500203 59.9797010072207 15.3143333262384 78.2860613595186 2877361.60852889 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2031-Aug-02 15:44 < 00:01 Jupiter 1.77290747156465 1.77290699514802 1.77290794798118 2.02496056173191 1.77339991528514 2463081.155475800 0.596879328946093 54.4690217874317 28.4590303000263 60.7448556679026 2457344.76120003 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2042-Sep-27 13:57 < 00:01 Jupiter 1.81191686547848 1.81191635096189 1.81191737999475 1.68264693882389 1.37708183719507 2467155.081252069 0.916903218128485 66.960785898514 38.1579087836237 81.3330429473384 2623653.63440571 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2053-Nov-23 00:37 00:01 Jupiter 1.88120748290753 1.88120690824669 1.88120805756847 2.05198903169148 1.81938164795472 2471229.525383322 1.22392217969313 59.0179534058462 29.1709299563297 83.024745481425 1904389.38836135 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2065-Jan-18 18:05 00:01 Jupiter 1.97880095247729 1.97880029336453 1.97880161159096 2.83059492510641 2.67510203479429 2475304.253325370 1.48882463371459 95.7585779144836 15.8381715467105 82.5205847263276 2625834.17345953 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2175-Dec-04 14:08 00:03 Jupiter 1.87886156405188 1.87886024183353 1.87886288627182 4.04804520644976 3.93510307684852 2515800.089061438 3.20763946857974 127.15200471915 31.4134958756633 67.4624676364146 1971684.50397892 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2187-Jan-17 13:10 00:03 Jupiter 1.74973978922735 1.74973908059833 1.74974049785626 3.24413359407011 3.09131575301828 2519862.048304311 3.20365691674367 88.2792071428513 20.4898533571212 89.2774758307067 1487377.38066235 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26
2198-Mar-19 19:41 00:03 Jupiter 1.71400061263723 1.71400012396306 1.71400110131237 2.52709280318817 2.32332535986842 2523941.319900473 3.34875749866825 147.867687612601 17.094158454371 69.589761193144 2306679.3605762 T 66 CATAB v2.0f-lin.ifort 2020-Oct-22 15:26:32 2020-Oct-22 15:26

Alternate Designations
 A892 EA = 1949 HQ 
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