Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
80 Sappho (A864 JA)
Classification: Main-belt Asteroid          SPK-ID: 2000080
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2003977234169836 1.7584e-08  
a 2.295319488009139 2.6052e-09 au
q 1.835342688097472 4.0295e-08 au
i 8.676152199633499 2.2807e-07 deg
node 218.6872472964214 2.9155e-06 deg
peri 139.6014268880214 5.4097e-06 deg
M 267.3801794970447 3.4469e-06 deg
tp 2459527.286853782982
(2021-Nov-08.78685378)
1.2445e-05 TDB
period 1270.173778388177
3.48
2.1625e-06
5.921e-09
d
yr
n .2834257848220046 4.8254e-10 deg/d
Q 2.755296287920807 3.1273e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2795  
   data-arc span      56775 days (155.44 yr)  
   first obs. used      1865-10-08  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:49:48  

Additional Information
 Earth MOID = .84091 au 
 Jupiter MOID = 2.73956 au 
 T_jup = 3.553 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457345.5 (2015-Nov-19.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1999177193200771 1.7681e-08  
q 1.836939108490239 4.0508e-08 au
tp 2456984.558279025557
(2014-Nov-23.05827903)
1.0861e-05 TDB
node 218.767017050479 2.9238e-06 deg
peri 139.1934311689556 5.4183e-06 deg
i 8.664288578614258 2.2782e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2795  
   data-arc span      56775 days (155.44 yr)  
   first obs. used      1865-10-08  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:49:48  

Additional Information
 Jupiter MOID = 2.73956 au 
 T_jup = 3.553 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.12611474041155E-16 -7.152488111077571E-16 -9.558453285074025E-14 1.470353476639172E-14 -5.674194148641404E-14 3.442764844466627E-16
q -7.152488111077571E-16 1.640873111484973E-15 2.24110120912657E-13 -3.424580896842925E-14 1.318320298358941E-13 -7.606831679952936E-16
tp -9.558453285074025E-14 2.24110120912657E-13 1.179540455398644E-10 -1.527524244697442E-11 5.067557600693588E-11 -3.590395113106351E-14
node 1.470353476639172E-14 -3.424580896842925E-14 -1.527524244697442E-11 8.548426201061882E-12 -1.302898895464522E-11 -2.527246864705668E-13
peri -5.674194148641404E-14 1.318320298358941E-13 5.067557600693588E-11 -1.302898895464522E-11 2.935788482719064E-11 1.767954346200745E-13
i 3.442764844466627E-16 -7.606831679952936E-16 -3.590395113106351E-14 -2.527246864705668E-13 1.767954346200745E-13 5.190139708893304E-14

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.06   n/a E2021B10 IRAS observations used: 29
diameter diameter 68.563 km 1.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.030 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Debehogne, H.; Lagerkvist, C.-I.; Hahn, G. (1990) in Asteroids, Comets, Meteors III. C.-I. Lagerkvist, H. Rickman, B.A. Lindblad, M. Lindgren, eds. Uppsala, p. 45-48.]
[Michalowski, T. (1993) Icarus 106, 563-572.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Pilcher, F. (2010) Minor Planet Bull. 37, 148-149.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.206   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.901   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=7.56, mean=16.47, max.=25.92) deg.
U-B UB 0.523   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.56, mean=18.69, max.=27.58) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

80 Sappho (A864 JA)          Discovered 1864-May-02 by Pogson, N. R. at Madras
May 3 is date of first measurement.
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-16 23:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin