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880 Herba (A917 OC)
Classification: Main-belt Asteroid          SPK-ID: 2000880
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3235786463943639 2.6649e-08  
a 2.997155488922836 1.3948e-08 au
q 2.027339972783746 8.5113e-08 au
i 15.14696293742028 7.1328e-07 deg
node 262.6200019519335 4.2496e-06 deg
peri 100.9002033235045 5.8275e-06 deg
M 285.185286351156 4.3489e-06 deg
tp 2459594.364515364847
(2022-Jan-14.86451536)
2.5025e-05 TDB
period 1895.231814919016
5.19
1.323e-05
3.622e-08
d
yr
n .1899503781891625 1.326e-09 deg/d
Q 3.966971005061925 1.8462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2481  
   data-arc span      37864 days (103.67 yr)  
   first obs. used      1917-07-22  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39479  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:58:06  

Additional Information
 Earth MOID = 1.0884 au 
 Jupiter MOID = 1.96391 au 
 T_jup = 3.122 
[ 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 11.37   n/a E2021B10  
diameter diameter 32.329 km 0.414 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.266 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 32-37.]
[Pilcher, F. (2012) Minor Planet Bull. 39, 57-60.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.049   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.634   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.00 deg.
U-B UB 0.301   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.00 deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

880 Herba (A917 OC)          Discovered 1917-Jul-22 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
1910-Aug-03 17:27 00:03 Jupiter 1.96644689667874 1.96644673895481 1.96644705440345 2.02996522274212 1.80534864029597 2418887.226976532 2.8684210701515 478.408303943088 39.4277986041896 70.2929264654864 2561329.56050286 T 41 CATAB v2.0g-lin.ifort 2021-May-03 18:58:58 2021-May-03 18:58
1994-Feb-14 00:51 < 00:01 Jupiter 1.96963400068271 1.96963381661742 1.96963418474856 3.10514867836278 2.96342153468226 2449397.535540664 0.469501343821635 76.0160017086207 9.98094621721062 -87.9962806378784 8537358.87165266 T 41 CATAB v2.0g-lin.ifort 2021-May-03 18:58:58 2021-May-03 18:58
2039-Dec-30 11:38 < 00:01 Jupiter 1.99829949452085 1.9982993344988 1.99829965454636 0.382460875894621 n/a 2466152.984559353 0.990713593037701 233.665650308762 6.60422254116583 88.901250794261 45246011.2309239 F 41 CATAB v2.0g-lin.ifort 2021-May-03 18:58:58 2021-May-03 18:58
2077-Aug-03 01:17 00:01 Jupiter 1.99800777809868 1.99800728099678 1.99800827520911 3.8457330424668 3.7338713894706 2479883.553216438 1.39534088450657 222.664430534524 8.41642431124627 -85.6525308508745 21455195.7759086 T 41 CATAB v2.0g-lin.ifort 2021-May-03 18:58:58 2021-May-03 18:58
2123-Sep-18 23:04 00:03 Jupiter 1.95921285033979 1.9592124029599 1.95921329776021 1.65784070885964 1.37250860808791 2496730.460875990 3.33117600040763 721.283888906069 78.7146826511335 47.0014992368747 1658355.58904399 T 41 CATAB v2.0g-lin.ifort 2021-May-03 18:58:58 2021-May-03 18:58

Alternate Designations
 A917 OC = 1954 YC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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