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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
838 Seraphina (A916 SL)
Classification: Main-belt Asteroid          SPK-ID: 2000838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1308904922838852 3.077e-08  
a 2.898295835539348 1.0666e-08 au
q 2.518936466841268 8.9482e-08 au
i 10.42261589778919 3.908e-06 deg
node 240.053144467995 1.9419e-05 deg
peri 117.1042248616116 2.4624e-05 deg
M 15.2480024557756 1.6007e-05 deg
tp 2458924.165133825308
(2020-Mar-15.66513383)
7.9989e-05 TDB
period 1802.239467273973
4.93
9.949e-06
2.724e-08
d
yr
n .1997514794992964 1.1027e-09 deg/d
Q 3.277655204237428 1.2062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3021  
   data-arc span      37724 days (103.28 yr)  
   first obs. used      1916-09-24  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:38:34  

Additional Information
 Earth MOID = 1.53687 au 
 Jupiter MOID = 2.28773 au 
 T_jup = 3.251 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455850.5 (2011-Oct-16.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1357320103162645 3.1045e-08  
q 2.502726038902479 9.0724e-08 au
tp 2455318.325663265573
(2010-May-01.82566327)
7.1613e-05 TDB
node 240.1360467080936 1.9453e-05 deg
peri 116.7437381598329 2.4221e-05 deg
i 10.41667832644984 3.907e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3021  
   data-arc span      37724 days (103.28 yr)  
   first obs. used      1916-09-24  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:38:34  

Additional Information
 Jupiter MOID = 2.28773 au 
 T_jup = 3.251 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.637736767727336E-16 -2.802020532939011E-15 1.601482573943393E-13 1.305391297907101E-15 2.246488675652755E-14 9.161322524457985E-16
q -2.802020532939011E-15 8.230882705610608E-15 -3.950675874270602E-13 -2.936069136999984E-15 -4.841679396241023E-14 -2.271052585667584E-15
tp 1.601482573943393E-13 -3.950675874270602E-13 5.128437454711697E-9 -7.539885146171713E-12 1.048002051481736E-9 -3.801262635540925E-13
node 1.305391297907101E-15 -2.936069136999984E-15 -7.539885146171713E-12 3.784084894063397E-10 -3.731910230311107E-10 3.938476140668298E-12
peri 2.246488675652755E-14 -4.841679396241023E-14 1.048002051481736E-9 -3.731910230311107E-10 5.866446797353782E-10 -3.932624767358613E-12
i 9.161322524457985E-16 -2.271052585667584E-15 -3.801262635540925E-13 3.938476140668298E-12 -3.932624767358613E-12 1.526428416304178E-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 10.1   n/a MPO502161 IRAS observations used: 8
diameter diameter 58.095 km 0.496 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.67 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.048   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.703   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.47, mean=4.46, max.=7.45) deg.
U-B UB 0.324   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.47, mean=4.46, max.=7.45) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

838 Seraphina (A916 SL)          Discovered 1916-Sep-24 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A916 SL = 2019 FC5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-23 08:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin