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JPL Small-Body Database Browser
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69 Hesperia
Classification: Main-belt Asteroid          SPK-ID: 2000069
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1703273489880466 3.2112e-08  
a 2.976722493654596 7.7831e-09 au
q 2.469705242637322 9.5015e-08 au
i 8.591269359373253 3.8562e-06 deg
node 184.9969793935379 2.3818e-05 deg
peri 289.1865971670816 2.6662e-05 deg
M 301.0760313311494 1.2858e-05 deg
tp 2458907.540341100033
(2020-Feb-28.04034110)
6.7554e-05 TDB
period 1875.883877021415
5.14
7.3572e-06
2.014e-08
d
yr
n .1919095336389472 7.5266e-10 deg/d
Q 3.483739744671871 9.1088e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3156  
   data-arc span      57893 days (158.50 yr)  
   first obs. used      1861-04-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42828  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:49:03  

Additional Information
 Earth MOID = 1.50235 au 
 Jupiter MOID = 1.70736 au 
 T_jup = 3.222 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454227.5 (2007-May-07.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .167802260614857 3.2282e-08  
q 2.478280562222932 9.5353e-08 au
tp 2455160.544355581621
(2009-Nov-25.04435558)
6.3223e-05 TDB
node 185.0838643541657 2.3848e-05 deg
peri 289.9313650357628 2.6768e-05 deg
i 8.581652775498373 3.853e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3156  
   data-arc span      57893 days (158.50 yr)  
   first obs. used      1861-04-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42828  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:49:03  

Additional Information
 Jupiter MOID = 1.70736 au 
 T_jup = 3.222 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.042104889330648E-15 -3.071050888333247E-15 -1.236424773983467E-13 7.570141420934433E-15 -4.305338637815119E-15 5.221169027939453E-16
q -3.071050888333247E-15 9.092157859687291E-15 4.402186381704152E-13 -2.078472674129047E-14 1.840198081219322E-14 -1.02950455303716E-15
tp -1.236424773983467E-13 4.402186381704152E-13 3.997205717689258E-9 -1.371602934670509E-11 7.78902661186577E-10 1.407441123227304E-12
node 7.570141420934433E-15 -2.078472674129047E-14 -1.371602934670509E-11 5.687429041733165E-10 -5.64743937114677E-10 1.132622084942564E-11
peri -4.305338637815119E-15 1.840198081219322E-14 7.78902661186577E-10 -5.64743937114677E-10 7.165232010740098E-10 -1.087506685448575E-11
i 5.221169027939453E-16 -1.02950455303716E-15 1.407441123227304E-12 1.132622084942564E-11 -1.087506685448575E-11 1.484585376389549E-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 7.05   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
magnitude slope G 0.19   n/a PDS3 (MPC 17257) Fit
diameter diameter 138.13 km 4.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 5.655 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Poutanen, M.; Bowell, E.; Martin, L.J.; Thompson, D.T. (1985) Astron. Astrophys. Suppl. Ser. 61, 291-297.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Velichko, F.P.; Krugly, Yu.N. (1989) In "Methods of investigation of movement, physics and dynamic of Solar System small bodies, Dushanbe, p. 14-15 (in Russian).]
[De Angelis, G.; Mottola, S. (1995) Planet. Space Sci. 43, 1013-1017.]
[Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Shevchenko, V.G.; Velichko, F.P.; Checha, V.A.; Krugly, Y.N. (2014) Minor Planet Bull. 41, 195-198.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1402   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
B-V BV 0.674   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=6.83, mean=7.96, max.=9.99) deg.
U-B UB 0.230   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=6.83, mean=7.96, max.=9.99) deg.
Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

69 Hesperia          Discovered 1861-Apr-29 by Schiaparelli, G. at Milan
Reference: 20150829/MPCPages.arcLast Updated: 2015-09-02

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Alternate Designations
 1932 CM1 = 1945 NB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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