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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 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1524415675611323 3.5835e-08  
a 3.221490431849532 1.6174e-08 au
q 2.7304013805352 1.1225e-07 au
i 8.567555072905831 3.697e-06 deg
node 344.2199737538469 2.8028e-05 deg
peri 70.00525621436728 3.1613e-05 deg
M 279.5852739750595 1.5635e-05 deg
tp 2459672.255292838209
(2022-Apr-02.75529284)
9.3673e-05 TDB
period 2111.950308318927
5.78
1.5905e-05
4.355e-08
d
yr
n .1704585560474447 1.2838e-09 deg/d
Q 3.712579483163864 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-May-03 18:13:53  

Additional Information
 Earth MOID = 1.75558 au 
 Jupiter MOID = 1.77769 au 
 T_jup = 3.153 
[ 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 8.84   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 1.85787126872481 1.85787081855375 1.85787171889587 3.71196260488473 3.58703860124892 2454943.471851209 0.224771254608072 61.5839861013774 18.1681007493069 84.3440186613419 3273316.27096409 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2020-Jun-07 21:28 < 00:01 Jupiter 1.78316994804577 1.78316949694833 1.78317039914321 2.79876545040185 2.62356040895436 2459008.394245886 0.324539225775486 58.7240118513883 15.2782375045743 78.3914334730765 2896999.37513715 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2031-Aug-02 15:44 < 00:01 Jupiter 1.77290740868173 1.77290693803739 1.77290787932597 2.0249602311583 1.7733995297518 2463081.155425443 0.573431069311059 53.577560552945 28.0955155155311 61.4189441198794 2465016.77492235 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2042-Sep-27 13:57 < 00:01 Jupiter 1.81191682315347 1.81191631953331 1.81191732677332 1.68264703093938 1.37708194369599 2467155.081183333 0.882854256439773 66.3187121414458 37.7716074671444 81.3820097155724 2669253.6675148 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2053-Nov-23 00:36 00:01 Jupiter 1.88120747912147 1.88120692253466 1.88120803570849 2.05198945384746 1.81938212495227 2471229.525243069 1.17926514471489 58.1187690871948 28.220612928946 81.818099550592 1965094.21753725 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2065-Jan-18 18:05 00:01 Jupiter 1.9788010126922 1.97880037853227 1.97880164685303 2.83059540500935 2.67510254834516 2475304.253132350 1.43512502704031 93.6984104328378 15.6094927621722 82.6457688651559 2691975.27659502 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2175-Dec-04 14:08 00:03 Jupiter 1.8788612460274 1.87885997213883 1.87886251991747 4.04804307186032 3.93510086223524 2515800.088561590 3.10695212095553 123.337535210408 30.8761886209718 67.8267101985436 1997804.59960171 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2187-Jan-17 13:09 00:03 Jupiter 1.74973962948913 1.74973893958892 1.74974031938924 3.24413142477495 3.091313463054 2519862.047824462 3.10555743812553 86.6009038390353 20.1324157405324 89.1108956575516 1530871.71307507 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14
2198-Mar-19 19:40 00:03 Jupiter 1.71400059971487 1.71400011794838 1.71400108148225 2.52709077453274 2.32332315286084 2523941.319413100 3.24768391751171 143.87095718535 16.9406712965269 69.6768364671728 2341823.0040389 T 72 CATAB v2.0g-lin.ifort 2021-May-03 18:14:29 2021-May-03 18:14

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