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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 ]

[ show orbit diagram ]
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 
[ 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 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

[ 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
1915-Sep-17 15:15 00:01 Jupiter 1.83751213087446 1.83751143948143 1.83751282226874 3.28355406055848 3.14003249761659 2420758.135108847 1.14764241275647 102.092958513002 14.2649728760947 78.3638473453121 2784479.93919968 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
1960-Oct-15 21:17 < 00:01 Jupiter 1.87323120669453 1.87323073499872 1.87323167839002 1.65726666387192 1.35727263035516 2437223.386519571 0.710132195249642 51.1118153511834 35.8194495088488 -32.0325008813843 2281937.38809815 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
1997-Apr-14 07:21 < 00:01 Jupiter 1.74102343665593 1.74102304774889 1.74102382556268 1.66624418012973 1.34288974980517 2450552.806261147 0.246777543013901 76.5059028562352 62.9165910156639 49.4072446403541 2131337.43089294 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
2033-Sep-24 07:44 < 00:01 Jupiter 1.72383993704128 1.7238395680356 1.72384030604686 2.52091441906187 2.31782086035383 2463864.822271439 0.380599864615215 53.5265635090771 16.7234286943026 87.6042381597398 2530737.9640438 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
2070-Feb-25 06:15 < 00:01 Jupiter 1.85780730083731 1.85780681758974 1.85780778408518 3.47824450394357 3.34459758046123 2477167.760652944 0.811755607266536 73.024315727306 14.7010025578199 79.7095705078326 3131486.75942435 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
2115-Apr-09 22:31 00:01 Jupiter 1.84342315963012 1.8434224198012 1.84342389945842 1.5799438091574 1.2558883113022 2493646.438336987 1.46538938119484 72.2425208007932 52.8825553297635 -53.8406051641071 1968852.02535812 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
2151-Oct-04 21:11 00:02 Jupiter 1.70781266302938 1.70781215170124 1.70781317435859 1.94363560165753 1.66906587957676 2506973.382459154 1.8419351674219 120.524107900662 52.130785632269 -58.9730340392986 1844559.53087958 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49
2188-Mar-08 00:55 00:02 Jupiter 1.72036320324748 1.72036265719192 1.72036374930784 2.76404092171672 2.57977135597241 2520277.538018970 2.25194745891405 199.512914008607 14.3242988104693 89.4893288550398 2472387.30112357 T 120 CATAB v2.0f-lin.ifort 2019-Nov-07 01:49:19 2019-Nov-07 01:49

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