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 ]  
677 Aaltje (A909 BP)
Classification: Main-belt Asteroid          SPK-ID: 2000677
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05001687647191314 3.4776e-08  
a 2.955796805201969 1.1581e-08 au
q 2.807957081520107 1.0484e-07 au
i 8.486265034724912 3.8512e-06 deg
node 272.7120326505263 2.5256e-05 deg
peri 275.467972542858 4.6662e-05 deg
M 300.8080563707796 4.008e-05 deg
tp 2459505.690063727450
(2021-Oct-18.19006373)
0.00020688 TDB
period 1856.138119574178
5.08
1.0908e-05
2.986e-08
d
yr
n .1939510838140583 1.1398e-09 deg/d
Q 3.103636528883831 1.216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3402  
   data-arc span      41803 days (114.45 yr)  
   first obs. used      1906-08-13  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:45  

Additional Information
 Earth MOID = 1.82342 au 
 Jupiter MOID = 1.96299 au 
 T_jup = 3.249 
[ 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 9.59   n/a E2021B10  
diameter diameter 32.403 km 0.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.608 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J. (2009) Minor Planet Bull. 36, 162-165.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.313   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Sl   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)

677 Aaltje (A909 BP)          Discovered 1909-Jan-18 by Kopff, A. at Heidelberg
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
1927-Jul-26 02:16 00:02 Jupiter 1.9895589117009 1.98955850753231 1.98955931586994 2.96211373490972 2.81472025933733 2425087.594323508 1.5938941343992 117.138130623014 14.6215159342584 -88.6209443901691 3912431.8682442 T 42 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:54 2021-Feb-24 00:48
1963-Feb-20 15:47 < 00:01 Jupiter 1.98840512420186 1.98840473221265 1.98840551619118 2.95634736778025 2.80856334236218 2438081.157678940 0.943738775997733 77.2212597999843 14.2481042117477 -86.7754562103404 3891869.2705635 T 42 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:54 2021-Feb-24 00:48
1998-Sep-14 16:19 < 00:01 Jupiter 1.99250274050976 1.99250235404755 1.99250312697198 2.97285817526715 2.82624770558226 2451071.179702709 0.316996457272003 48.6059300943456 13.0634333106417 -81.1777762331666 3898787.14896713 T 42 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:54 2021-Feb-24 00:48
2034-Apr-10 19:30 < 00:01 Jupiter 1.99413199772383 1.99413160994594 1.99413238550172 2.97738993987423 2.83113684944699 2464063.312840008 0.421992277766002 51.8446618434309 13.1424649936131 -81.886938666896 3904748.94998338 T 42 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:54 2021-Feb-24 00:48
2069-Nov-02 04:02 00:01 Jupiter 1.99313333399489 1.99313293289096 1.99313373509904 2.98140419845352 2.83528311628314 2477052.667904214 1.05908638744714 83.9693916322111 14.0298704344874 -86.3662123941624 3858709.53639054 T 42 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:54 2021-Feb-24 00:48
2140-Dec-19 09:34 00:02 Jupiter 1.99836189087542 1.99836142102435 1.99836236072853 3.00414738905753 2.85957771235981 2503031.898652429 2.35207636329368 164.681514893607 14.3373145731496 -88.0164845449726 3810524.51266275 T 42 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:54 2021-Feb-24 00:48

Alternate Designations
 A909 BP = A906 PA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-07 23:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin