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225 Henrietta (A882 HA)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000225
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2636020182250864 2.7181e-08  
a 3.392071755796187 7.7234e-09 au
q 2.497914795004 9.2363e-08 au
i 20.8548601378636 3.2993e-06 deg
node 197.0489164396748 8.834e-06 deg
peri 103.7452723301908 1.1005e-05 deg
M 20.62328670287115 6.3783e-06 deg
tp 2458869.777197007939
(2020-Jan-21.27719701)
4.0158e-05 TDB
period 2281.89666153408
6.25
7.7935e-06
2.134e-08
d
yr
n .1577634982637549 5.3882e-10 deg/d
Q 4.286228716588375 9.7593e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3379  
   data-arc span      45829 days (125.47 yr)  
   first obs. used      1895-05-11  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39739  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:32:02  

Additional Information
 Earth MOID = 1.58162 au 
 Jupiter MOID = 1.70145 au 
 T_jup = 2.990 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455527.5 (2010-Nov-27.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2651017098041819 2.7053e-08  
q 2.490917539899042 9.1866e-08 au
tp 2456593.502995455546
(2013-Oct-28.00299546)
3.6435e-05 TDB
node 197.1210777119625 8.8284e-06 deg
peri 104.4767376437416 1.0975e-05 deg
i 20.87319135294198 3.3016e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3379  
   data-arc span      45829 days (125.47 yr)  
   first obs. used      1895-05-11  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39739  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:32:02  

Additional Information
 Jupiter MOID = 1.70145 au 
 T_jup = 2.990 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.318862776749892E-16 -2.480866724109508E-15 1.793594269312132E-13 -4.765443727903067E-15 2.473226921717488E-14 -1.862040165359848E-15
q -2.480866724109508E-15 8.439293166876394E-15 -5.330975811104712E-13 1.52046322243158E-14 -7.427946268971328E-14 5.172544524312584E-15
tp 1.793594269312132E-13 -5.330975811104712E-13 1.32747579328971E-9 -7.798398077414657E-12 2.484625839833826E-10 -6.654594518393397E-12
node -4.765443727903067E-15 1.52046322243158E-14 -7.798398077414657E-12 7.794139073336805E-11 -7.398372496337559E-11 -5.471470057729528E-12
peri 2.473226921717488E-14 -7.427946268971328E-14 2.484625839833826E-10 -7.398372496337559E-11 1.204420140861309E-10 3.999752604196673E-12
i -1.862040165359848E-15 5.172544524312584E-15 -6.654594518393397E-12 -5.471470057729528E-12 3.999752604196673E-12 1.090035533008365E-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 8.8   n/a MPO492751 IRAS observations used: 17
diameter diameter 95.934 km 1.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.3556 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Michalowski, T.; Pych, W.; Berthier, J.; Kryszczynska, A.; et al. (2000) Astron. Astrophys. Suppl. Ser. 146, 471-479.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2003) Abstracts of Photometry and Polarimetry of Asteroids: Impact on Collaboration, Kharkiv, 9-10.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.]
[Moravec, P.; Cochren, J.; Gerhardt, M.; Harris, A.; et al. (2012) Minor Planet Bull. 39, 213-216.]
[Pilcher, F. (2012) Minor Planet Bull. 39, 171-173.]
[Garceran, A.C. (2013) Posting on CALL web site. http://www.MinorPlanet.info/call.html]
geometric albedo albedo 0.062   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.648   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.40, mean=10.45, max.=16.51) deg.
U-B UB 0.282   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.40, mean=10.45, max.=16.51) deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

225 Henrietta (A882 HA)          Discovered 1882-Apr-19 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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