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 ]  
977 Philippa (A922 GA)
Classification: Main-belt Asteroid          SPK-ID: 2000977
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 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02585578554011823 1.9077e-08  
a 3.117115823539856 1.2157e-08 au
q 3.0365203453027 5.6227e-08 au
i 15.17371307939685 9.0675e-07 deg
node 75.73247920144567 2.1569e-06 deg
peri 72.43677777559685 3.9757e-05 deg
M 31.36044479400132 3.8156e-05 deg
tp 2459025.391370282729
(2020-Jun-24.89137028)
0.00021311 TDB
period 2010.147085358812
5.50
1.176e-05
3.22e-08
d
yr
n .179091372279228 1.0477e-09 deg/d
Q 3.197711301777011 1.2472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3035  
   data-arc span      38803 days (106.24 yr)  
   first obs. used      1914-12-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36895  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:44:50  

Additional Information
 Earth MOID = 2.08531 au 
 Jupiter MOID = 1.91194 au 
 T_jup = 3.163 
[ 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 9.93   n/a E2021B10 IRAS observations used: 19
diameter diameter 65.471 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.405 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2004) Minor Planet Bull. 31, 85-88.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.712   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=5.73, mean=6.86, max.=8.77) deg.
U-B UB 0.370   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.77 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

977 Philippa (A922 GA)          Discovered 1922-Apr-06 by Jekhovsky, B. at Algiers
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
1952-Dec-01 02:42 00:01 Jupiter 1.91315754657532 1.91315739424747 1.91315769890328 4.70067240099891 4.60552388819947 2434347.612537297 1.05715685658991 44.7508420493014 6.46562563760736 -87.0275860473407 9799429.74649764 T 86 CATAB v2.0f-lin.ifort 2021-Apr-12 11:46:02 2021-Apr-12 11:46
2024-Nov-01 21:49 < 00:01 Jupiter 1.97003071877261 1.97003047195995 1.97003096558539 5.13794587292462 5.05357100185568 2460616.409236120 0.23113702449527 30.8390043909619 5.46993320495782 -70.1729502182256 13095429.8330567 T 86 CATAB v2.0f-lin.ifort 2021-Apr-12 11:46:02 2021-Apr-12 11:46
2035-Feb-07 22:29 < 00:01 Jupiter 1.95994872765412 1.9599485761898 1.95994887911878 3.85316942417947 3.7393292602085 2464366.436907285 0.46383165545118 65.9114609258087 5.14384916839445 -84.0521532964802 14657325.0029411 T 86 CATAB v2.0f-lin.ifort 2021-Apr-12 11:46:02 2021-Apr-12 11:46
2107-Jan-29 18:10 00:02 Jupiter 1.90120280966744 1.90120266802571 1.90120295130917 4.6884524318606 4.59244462583565 2490654.256807714 1.6625335708354 57.9781147189109 7.13651582773914 88.1224514470943 9382594.9965202 T 86 CATAB v2.0f-lin.ifort 2021-Apr-12 11:46:02 2021-Apr-12 11:46
2178-Dec-31 17:35 00:03 Jupiter 1.95125340656786 1.9512525139509 1.95125429919668 5.08823354615367 5.00219328169013 2516923.232357054 2.8133403181383 249.338623567849 7.26508213526087 -80.1592714581432 11416698.8299541 T 86 CATAB v2.0f-lin.ifort 2021-Apr-12 11:46:02 2021-Apr-12 11:46
2189-Apr-08 21:47 00:03 Jupiter 1.9481311858153 1.94813039133728 1.94813198032311 3.87460569812733 3.76071733956986 2520674.407344861 3.41306031617246 391.794746256041 5.34713447369241 -82.5358495975053 16372513.1221165 T 86 CATAB v2.0f-lin.ifort 2021-Apr-12 11:46:02 2021-Apr-12 11:46

Alternate Designations
 A922 GA = A914 YA = A919 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 10:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin