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 ]  
118 Peitho (A872 EA)
Classification: Main-belt Asteroid          SPK-ID: 2000118
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 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1646256169949826 4.2807e-08  
a 2.436901366536709 4.8581e-09 au
q 2.035724975514687 1.0485e-07 au
i 7.745332233806551 4.7822e-06 deg
node 47.67843564589762 3.2975e-05 deg
peri 33.32877075847338 3.5583e-05 deg
M 53.87046684402991 1.3223e-05 deg
tp 2458792.576492609181
(2019-Nov-05.07649261)
5.1e-05 TDB
period 1389.489771406911
3.80
4.155e-06
1.138e-08
d
yr
n .2590879093953217 7.7476e-10 deg/d
Q 2.838077757558731 5.6579e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3003  
   data-arc span      54140 days (148.23 yr)  
   first obs. used      1872-03-22  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4278  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:07:22  

Additional Information
 Earth MOID = 1.05598 au 
 Jupiter MOID = 2.42885 au 
 T_jup = 3.473 
[ 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 8.9   n/a MPO502153 IRAS observations used: 32
diameter diameter 40.211 km 0.491 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.8055 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stanzel, R.; Schober, H.J. (1980) Astron. Astrophys. Suppl. Ser. 39, 3-5.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2017) Minor Planet Bull. 44, 294-297.]
geometric albedo albedo 0.245   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.859   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.42, mean=8.57, max.=13.72) deg.
U-B UB 0.433   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.42, mean=8.57, max.=13.72) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
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)

118 Peitho (A872 EA)          Discovered 1872-Mar-15 by Luther, R. at Dusseldorf
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
2111-Dec-10 22:58 < 00:01 Vesta 0.033965531213578 0.0339606069087235 0.0339704555509761 5.18998828767058 5.18998761269225 2492430.457023332 0.530843047925926 250.487249355144 39.143323433359 12.2916251642305 33917.6376300054 T 69 CATAB v2.0f-lin.ifort 2020-Jun-23 15:07:44 2020-Jun-23 15:07
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-27 09:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin