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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 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1524415675525481 3.5838e-08  
a 3.221490434452966 1.618e-08 au
q 2.730401382769417 1.1225e-07 au
i 8.567555079543389 3.7033e-06 deg
node 344.2199736513817 2.8031e-05 deg
peri 70.00525616176215 3.1634e-05 deg
M 279.5852739518892 1.5655e-05 deg
tp 2459672.255293546009
(2022-Apr-02.75529355)
9.3781e-05 TDB
period 2111.950310879073
5.78
1.5911e-05
4.356e-08
d
yr
n .1704585558408117 1.2842e-09 deg/d
Q 3.712579486136516 1.8646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3641  
   data-arc span      47034 days (128.77 yr)  
   first obs. used      1892-03-04  
   last obs. used      2020-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35126  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:45:35  

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 1.85787127720594 1.85787082611218 1.8578717282997 3.71196314398686 3.58703915900415 2454943.471863958 0.225215244299179 61.5874993837718 18.2079538836407 84.3484003991305 3266077.13123747 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2020-Jun-07 21:28 < 00:01 Jupiter 1.7831699815617 1.78316952976912 1.78317043335429 2.79876604254948 2.62356104304929 2459008.394281282 0.325331694665699 58.7421273480035 15.2991021379485 78.4113894382138 2890082.16537894 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2031-Aug-02 15:44 < 00:01 Jupiter 1.77290747007161 1.77290699898595 1.77290794115718 2.02496061572837 1.77339997671424 2463081.155472089 0.574429221681334 53.6468998140449 28.1155137384117 61.4504524367412 2460356.12714447 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2042-Sep-27 13:57 < 00:01 Jupiter 1.8119168707776 1.81191636665594 1.81191737489895 1.68264696994948 1.37708187622001 2467155.081249575 0.884245469619291 66.3816288225103 37.786635561478 81.3749514215173 2668929.87148761 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2053-Nov-23 00:37 00:01 Jupiter 1.88120749529652 1.88120693782558 1.88120805276768 2.05198917047841 1.81938180611531 2471229.525351466 1.18120737439267 58.2191530931423 28.2466742319901 81.8650986066661 1963934.07400967 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2065-Jan-18 18:05 00:01 Jupiter 1.97880097026472 1.97880033457955 1.97880160595079 2.83059486132936 2.67510196874848 2475304.253315441 1.4376349862308 93.903334801263 15.6126908100611 82.6382204741891 2689800.5069655 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2175-Dec-04 14:08 00:03 Jupiter 1.87886153684655 1.87886025952476 1.87886281416982 4.04804502664925 3.93510289022868 2515800.089017007 3.1119945692806 123.508709992582 30.932657373888 67.7851939956234 1993363.63541504 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2187-Jan-17 13:10 00:03 Jupiter 1.74973977473598 1.74973908264229 1.74974046682956 3.24413348345776 3.09131563564094 2519862.048265687 3.11022182268483 86.6518574904469 20.1935529349832 89.1468423861203 1527961.19568715 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45
2198-Mar-19 19:41 00:03 Jupiter 1.71400061158718 1.71400012960205 1.7140010935732 2.52709267016079 2.32332521504356 2523941.319855536 3.25210224863453 144.066762259712 16.9520595703014 69.6903309777598 2337979.19170261 T 70 CATAB v2.0f-lin.ifort 2021-Feb-24 00:45:45 2021-Feb-24 00:45

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