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 ]  
1269 Rollandia (1930 SH)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001269
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09910979174400064 3.5132e-08  
a 3.900333408743432 2.3123e-08 au
q 3.513772176870702 1.3576e-07 au
i 2.758821539914082 3.7977e-06 deg
node 134.7096571862666 8.6707e-05 deg
peri 19.44979332790263 8.9572e-05 deg
M 44.06998881435097 2.092e-05 deg
tp 2458656.077538729186
(2019-Jun-21.57753873)
0.00016396 TDB
period 2813.526606049786
7.70
2.502e-05
6.85e-08
d
yr
n .127953295066025 1.1379e-09 deg/d
Q 4.286894640616162 2.5415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3364  
   data-arc span      43263 days (118.45 yr)  
   first obs. used      1902-03-03  
   last obs. used      2020-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43598  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:45  

Additional Information
 Earth MOID = 2.52414 au 
 Jupiter MOID = .702847 au 
 T_jup = 3.055 
[ 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 8.7   n/a MPO473780 IRAS observations used: 18
diameter diameter 104.893 km 1.042 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 17.36 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:
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46-4, submitted. (Hildas)]
geometric albedo albedo 0.048   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.775   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.20 deg.
U-B UB 0.271   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.20 deg.
Tholen spectral type spec_T D   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1269 Rollandia (1930 SH)          Discovered 1930-Sep-20 by Neujmin, G. at Simeis
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
1912-Feb-11 13:57 00:02 Jupiter 1.43212046602024 1.43211969046808 1.43212124157231 2.4968596271479 2.24753535394122 2419444.081015798 1.68266546002437 58.2206288259836 17.8837070121163 80.5627126268128 2364849.79202621 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
1936-Mar-29 19:19 00:02 Jupiter 1.40049711502836 1.40049620755328 1.40049802250304 2.32188139379508 2.04487910394189 2428257.305018751 1.93147719948317 58.1353559155526 16.1873242586386 84.2718449632603 1896755.0895534 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
1959-May-20 03:20 00:02 Jupiter 1.58166676859055 1.58166598127403 1.58166755590716 2.85644625216901 2.66237387701312 2436708.638956098 1.68964622656707 60.3957835360662 21.9929155552117 74.5294492078991 2518732.35124775 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
1981-Nov-28 20:42 00:01 Jupiter 1.82509371998151 1.82509321171213 1.82509422825078 3.73748858153364 3.61118051476195 2444937.362683564 1.02317681097588 51.0682910342344 21.0452028812351 84.2467478708397 3698296.65419124 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2004-Apr-10 20:01 < 00:01 Jupiter 1.89438123853287 1.89438079984283 1.89438167722292 4.12196461199194 4.01202506326496 2453106.333739259 0.381124231723003 38.4859383290774 19.4095151424301 -87.4580220487366 4392433.6842672 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2026-Sep-09 23:51 < 00:01 Jupiter 1.73965825505202 1.73965779889382 1.73965871121022 3.68793014830901 3.5534558425153 2461293.493970665 0.453860617145817 42.0674655138481 19.1560506285015 -87.7144687111115 3898100.90283309 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2049-May-23 05:54 00:01 Jupiter 1.47698988255841 1.47698912095448 1.47699064416218 2.83573725574637 2.62572809085858 2469584.746154973 1.14848102930827 48.3468076719674 24.129759564222 -83.3462818549814 2039161.47607989 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2072-Nov-24 03:10 00:02 Jupiter 1.38137506779484 1.38137421256221 1.38137592302716 2.57972015095271 2.32993758663191 2478170.631959099 1.55270776208973 50.5817098597574 22.2148953496277 -84.2125652626076 1773638.87449345 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2097-Apr-28 03:49 00:02 Jupiter 1.4674624315157 1.46746160503975 1.46746325799157 2.8900121866624 2.68286527379332 2487091.659078483 1.90424157592154 60.9231078710713 25.1049160082511 -75.1234549877501 2176308.07964119 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2122-Feb-28 18:06 00:02 Jupiter 1.53027617384975 1.5302753752036 1.53027697249589 2.97478173520701 2.78250017440564 2496163.253956214 2.39821060955465 82.5059011312881 25.7673450597364 -80.0873320506134 2146756.85687766 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2146-Dec-31 01:43 00:03 Jupiter 1.47877082721777 1.47877002791642 1.47877162651878 2.59628147088796 2.36539659002412 2505234.571348405 2.82190282261351 102.457641425991 21.2218609971573 -89.8760927193772 1837617.7231975 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2171-May-11 22:18 00:03 Jupiter 1.4116592004622 1.41165835417564 1.41166004674836 2.20647036203142 1.91532587618785 2514132.428867292 2.65653904373489 102.884111032514 8.02913219173016 -87.2061108343252 1639292.43115964 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20
2194-Sep-30 07:25 00:02 Jupiter 1.54706778648938 1.5470669829968 1.54706858998178 2.59936274352323 2.37942911638285 2522674.809005209 1.53402810457218 67.9295663078606 19.6011689549997 -80.347341625563 1933711.91632262 T 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:20:54 2020-Nov-13 04:20

Alternate Designations
 1930 SH = 1926 GC1 = 1931 VY = 1936 LE = 1961 PB = A902 EA = A906 SA = A907 WB = A918 EG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-25 08:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin